3112031021 has 4 divisors (see below), whose sum is σ = 3394942944. Its totient is φ = 2829119100.

The previous prime is 3112031011. The next prime is 3112031023. The reversal of 3112031021 is 1201302113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3112031021 - 2²² = 3107836717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3112030987 and 3112031005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112031023) 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, 141455945 + ... + 141455966.

It is an arithmetic number, because the mean of its divisors is an integer number (848735736).

Almost surely, 2^3112031021 is an apocalyptic number.

It is an amenable number.

3112031021 is a deficient number, since it is larger than the sum of its proper divisors (282911923).

3112031021 is a wasteful number, since it uses less digits than its factorization.

3112031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282911922.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 3112031021 is about 55785.5807624157. The cubic root of 3112031021 is about 1459.9835835084.

Adding to 3112031021 its reverse (1201302113), we get a palindrome (4313333134).

The spelling of 3112031021 in words is "three billion, one hundred twelve million, thirty-one thousand, twenty-one".