31540352124 has 24 divisors (see below), whose sum is σ = 73723057408. Its totient is φ = 10495036080.

The previous prime is 31540352119. The next prime is 31540352147. The reversal of 31540352124 is 42125304513.

It is a super-2 number, since 2×31540352124² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31540352091 and 31540352100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2294692 + ... + 2308395.

Almost surely, 2^31540352124 is an apocalyptic number.

It is an amenable number.

31540352124 is an abundant number, since it is smaller than the sum of its proper divisors (42182705284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31540352124 is a wasteful number, since it uses less digits than its factorization.

31540352124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603665 (or 4603663 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 31540352124 its reverse (42125304513), we get a palindrome (73665656637).

The spelling of 31540352124 in words is "thirty-one billion, five hundred forty million, three hundred fifty-two thousand, one hundred twenty-four".