31250540231 has 8 divisors (see below), whose sum is σ = 31337950800. Its totient is φ = 31163166720.

The previous prime is 31250540183. The next prime is 31250540257. The reversal of 31250540231 is 13204505213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31250540231 is a prime.

It is a super-2 number, since 2×31250540231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31250540231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31250545231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2982680 + ... + 2993138.

It is an arithmetic number, because the mean of its divisors is an integer number (3917243850).

Almost surely, 2^31250540231 is an apocalyptic number.

31250540231 is a deficient number, since it is larger than the sum of its proper divisors (87410569).

31250540231 is a wasteful number, since it uses less digits than its factorization.

31250540231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18529.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 31250540231 in words is "thirty-one billion, two hundred fifty million, five hundred forty thousand, two hundred thirty-one".