31240343124 has 72 divisors (see below), whose sum is σ = 85060265472. Its totient is φ = 9639368640.

The previous prime is 31240343107. The next prime is 31240343129. The reversal of 31240343124 is 42134304213.

31240343124 is a `hidden beast` number, since 312 + 4 + 0 + 34 + 312 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240343129) 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, 582879 + ... + 634214.

It is an arithmetic number, because the mean of its divisors is an integer number (1181392576).

Almost surely, 2^31240343124 is an apocalyptic number.

It is an amenable number.

31240343124 is an abundant number, since it is smaller than the sum of its proper divisors (53819922348).

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

31240343124 is a wasteful number, since it uses less digits than its factorization.

31240343124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217157 (or 1217152 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31240343124 its reverse (42134304213), we get a palindrome (73374647337).

The spelling of 31240343124 in words is "thirty-one billion, two hundred forty million, three hundred forty-three thousand, one hundred twenty-four".