1308113121 has 32 divisors (see below), whose sum is σ = 2170598400. Its totient is φ = 683726400.

The previous prime is 1308113113. The next prime is 1308113123. The reversal of 1308113121 is 1213118031.

It is a happy number.

It is not a de Polignac number, because 1308113121 - 2³ = 1308113113 is a prime.

It is a super-2 number, since 2×1308113121² = 3422319874664721282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1308113123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44955 + ... + 68096.

It is an arithmetic number, because the mean of its divisors is an integer number (67831200).

Almost surely, 2^1308113121 is an apocalyptic number.

It is an amenable number.

1308113121 is a deficient number, since it is larger than the sum of its proper divisors (862485279).

1308113121 is a wasteful number, since it uses less digits than its factorization.

1308113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113109.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1308113121 is about 36167.8465076371. The cubic root of 1308113121 is about 1093.6585871640.

The spelling of 1308113121 in words is "one billion, three hundred eight million, one hundred thirteen thousand, one hundred twenty-one".