31030012345 has 16 divisors (see below), whose sum is σ = 37621441728. Its totient is φ = 24567278400.

The previous prime is 31030012339. The next prime is 31030012357. The reversal of 31030012345 is 54321003013.

It is not a de Polignac number, because 31030012345 - 2⁷ = 31030012217 is a prime.

It is a super-2 number, since 2×31030012345² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233382 + ... + 1258288.

It is an arithmetic number, because the mean of its divisors is an integer number (2351340108).

Almost surely, 2^31030012345 is an apocalyptic number.

It is an amenable number.

31030012345 is a deficient number, since it is larger than the sum of its proper divisors (6591429383).

31030012345 is a wasteful number, since it uses less digits than its factorization.

31030012345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27480.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 31030012345 its reverse (54321003013), we get a palindrome (85351015358).

The spelling of 31030012345 in words is "thirty-one billion, thirty million, twelve thousand, three hundred forty-five".