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2113030231 = 131213133999
BaseRepresentation
bin111110111110010…
…0100100001010111
312110021001001112221
41331330210201113
513311413431411
6545401323211
7103235313664
oct17574444127
95407031487
102113030231
11994828984
124ab796507
13278a00a60
141608bca6b
15c578d071
hex7df24857

2113030231 has 8 divisors (see below), whose sum is σ = 2277464000. Its totient is φ = 1948866912.

The previous prime is 2113030229. The next prime is 2113030273. The reversal of 2113030231 is 1320303112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2113030231 - 21 = 2113030229 is a prime.

It is a super-2 number, since 2×21130302312 = 8929793514239826722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113030201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51231 + ... + 82768.

It is an arithmetic number, because the mean of its divisors is an integer number (284683000).

Almost surely, 22113030231 is an apocalyptic number.

2113030231 is a deficient number, since it is larger than the sum of its proper divisors (164433769).

2113030231 is a wasteful number, since it uses less digits than its factorization.

2113030231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135225.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2113030231 is about 45967.7085680807. The cubic root of 2113030231 is about 1283.2223155927. Note that the first 3 decimals are identical.

Adding to 2113030231 its reverse (1320303112), we get a palindrome (3433333343).

The spelling of 2113030231 in words is "two billion, one hundred thirteen million, thirty thousand, two hundred thirty-one".

Divisors: 1 13 1213 15769 133999 1741987 162540787 2113030231