1201000031 has 16 divisors (see below), whose sum is σ = 1499627520. Its totient is φ = 934421280.

The previous prime is 1201000027. The next prime is 1201000043. The reversal of 1201000031 is 1300001021.

It is a cyclic number.

It is not a de Polignac number, because 1201000031 - 2² = 1201000027 is a prime.

It is a super-2 number, since 2×1201000031² = 2884802148924001922, 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 = 1200999982 and 1201000018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201000061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40610 + ... + 63648.

It is an arithmetic number, because the mean of its divisors is an integer number (93726720).

Almost surely, 2^1201000031 is an apocalyptic number.

1201000031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201000031 is a deficient number, since it is larger than the sum of its proper divisors (298627489).

1201000031 is a wasteful number, since it uses less digits than its factorization.

1201000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23734.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1201000031 is about 34655.4473495870. The cubic root of 1201000031 is about 1062.9536793068.

Adding to 1201000031 its reverse (1300001021), we get a palindrome (2501001052).

The spelling of 1201000031 in words is "one billion, two hundred one million, thirty-one", and thus it is an aban number.