31004312241 has 32 divisors (see below), whose sum is σ = 50168125440. Its totient is φ = 16626468096.

The previous prime is 31004312239. The next prime is 31004312249. The reversal of 31004312241 is 14221340013.

It is not a de Polignac number, because 31004312241 - 2¹ = 31004312239 is a prime.

It is a super-2 number, since 2×31004312241² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (31004312249) 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, 1261 + ... + 249018.

It is an arithmetic number, because the mean of its divisors is an integer number (1567753920).

Almost surely, 2^31004312241 is an apocalyptic number.

It is an amenable number.

31004312241 is a deficient number, since it is larger than the sum of its proper divisors (19163813199).

31004312241 is a wasteful number, since it uses less digits than its factorization.

31004312241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250653.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31004312241 its reverse (14221340013), we get a palindrome (45225652254).

The spelling of 31004312241 in words is "thirty-one billion, four million, three hundred twelve thousand, two hundred forty-one".