31030740909 has 24 divisors (see below), whose sum is σ = 51414401792. Its totient is φ = 17666411040.

The previous prime is 31030740907. The next prime is 31030740911. The reversal of 31030740909 is 90904703013.

It is an interprime number because it is at equal distance from previous prime (31030740907) and next prime (31030740911).

It is not a de Polignac number, because 31030740909 - 2¹ = 31030740907 is a prime.

It is a super-3 number, since 3×31030740909³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030740907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 891694 + ... + 925839.

Almost surely, 2^31030740909 is an apocalyptic number.

It is an amenable number.

31030740909 is a deficient number, since it is larger than the sum of its proper divisors (20383660883).

31030740909 is a wasteful number, since it uses less digits than its factorization.

31030740909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817817 (or 1817814 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The spelling of 31030740909 in words is "thirty-one billion, thirty million, seven hundred forty thousand, nine hundred nine".