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1201341031 = 11109212821
BaseRepresentation
bin100011110011011…
…0000001001100111
310002201112110002021
41013212300021213
54430020403111
6315112524011
741525141662
oct10746601147
93081473067
101201341031
11567142330
122963b0607
13161b739a7
14b579c6d9
1570702d71
hex479b0267

1201341031 has 4 divisors (see below), whose sum is σ = 1310553864. Its totient is φ = 1092128200.

The previous prime is 1201341019. The next prime is 1201341059. The reversal of 1201341031 is 1301431021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1301431021 = 11118311911.

It is a cyclic number.

It is not a de Polignac number, because 1201341031 - 217 = 1201209959 is a prime.

It is a super-2 number, since 2×12013410312 = 2886440545528285922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201340996 and 1201341014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201341331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54606400 + ... + 54606421.

It is an arithmetic number, because the mean of its divisors is an integer number (327638466).

Almost surely, 21201341031 is an apocalyptic number.

1201341031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201341031 is a deficient number, since it is larger than the sum of its proper divisors (109212833).

1201341031 is a wasteful number, since it uses less digits than its factorization.

1201341031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109212832.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1201341031 is about 34660.3668618784. The cubic root of 1201341031 is about 1063.0542712844.

Adding to 1201341031 its reverse (1301431021), we get a palindrome (2502772052).

The spelling of 1201341031 in words is "one billion, two hundred one million, three hundred forty-one thousand, thirty-one".

Divisors: 1 11 109212821 1201341031