31241023645 has 16 divisors (see below), whose sum is σ = 40975603200. Its totient is φ = 22725958464.

The previous prime is 31241023621. The next prime is 31241023661. The reversal of 31241023645 is 54632014213.

It is a cyclic number.

It is not a de Polignac number, because 31241023645 - 2⁵ = 31241023613 is a prime.

It is a congruent 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, 3582445 + ... + 3591154.

It is an arithmetic number, because the mean of its divisors is an integer number (2560975200).

Almost surely, 2^31241023645 is an apocalyptic number.

It is an amenable number.

31241023645 is a deficient number, since it is larger than the sum of its proper divisors (9734579555).

31241023645 is a wasteful number, since it uses less digits than its factorization.

31241023645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7173684.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 31241023645 its reverse (54632014213), we get a palindrome (85873037858).

The spelling of 31241023645 in words is "thirty-one billion, two hundred forty-one million, twenty-three thousand, six hundred forty-five".