31030072979135 has 32 divisors (see below), whose sum is σ = 38146177988352. Its totient is φ = 24220693094400.

The previous prime is 31030072979053. The next prime is 31030072979137. The reversal of 31030072979135 is 53197927003013.

It is not a de Polignac number, because 31030072979135 - 2¹⁴ = 31030072962751 is a prime.

It is a super-3 number, since 3×31030072979135³ (a number of 41 digits) contains 333 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 (31030072979137) 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, 129821735 + ... + 130060535.

It is an arithmetic number, because the mean of its divisors is an integer number (1192068062136).

Almost surely, 2^{31030072979135} is an apocalyptic number.

31030072979135 is a deficient number, since it is larger than the sum of its proper divisors (7116105009217).

31030072979135 is a wasteful number, since it uses less digits than its factorization.

31030072979135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240563.

The product of its (nonzero) digits is 1071630, while the sum is 50.

The spelling of 31030072979135 in words is "thirty-one trillion, thirty billion, seventy-two million, nine hundred seventy-nine thousand, one hundred thirty-five".