31312242534 has 16 divisors (see below), whose sum is σ = 62626353840. Its totient is φ = 10437102720.

The previous prime is 31312242469. The next prime is 31312242539. The reversal of 31312242534 is 43524221313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312242539) 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, 239394 + ... + 346314.

It is an arithmetic number, because the mean of its divisors is an integer number (3914147115).

Almost surely, 2^31312242534 is an apocalyptic number.

31312242534 is an abundant number, since it is smaller than the sum of its proper divisors (31314111306).

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

31312242534 is a wasteful number, since it uses less digits than its factorization.

31312242534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155735.

The product of its digits is 17280, while the sum is 30.

Adding to 31312242534 its reverse (43524221313), we get a palindrome (74836463847).

The spelling of 31312242534 in words is "thirty-one billion, three hundred twelve million, two hundred forty-two thousand, five hundred thirty-four".