31040212542 has 16 divisors (see below), whose sum is σ = 62082832512. Its totient is φ = 10346336280.

The previous prime is 31040212519. The next prime is 31040212571. The reversal of 31040212542 is 24521204013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97233 + ... + 267459.

It is an arithmetic number, because the mean of its divisors is an integer number (3880177032).

Almost surely, 2^31040212542 is an apocalyptic number.

31040212542 is an abundant number, since it is smaller than the sum of its proper divisors (31042619970).

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

31040212542 is a wasteful number, since it uses less digits than its factorization.

31040212542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200623.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 31040212542 its reverse (24521204013), we get a palindrome (55561416555).

The spelling of 31040212542 in words is "thirty-one billion, forty million, two hundred twelve thousand, five hundred forty-two".