31210255342 has 32 divisors (see below), whose sum is σ = 57517562880. Its totient is φ = 12402214560.

The previous prime is 31210255339. The next prime is 31210255343. The reversal of 31210255342 is 24355201213.

It is a self number, because there is not a number n which added to its sum of digits gives 31210255342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210255343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235709 + ... + 1260712.

It is an arithmetic number, because the mean of its divisors is an integer number (1797423840).

Almost surely, 2^31210255342 is an apocalyptic number.

31210255342 is a deficient number, since it is larger than the sum of its proper divisors (26307307538).

31210255342 is a wasteful number, since it uses less digits than its factorization.

31210255342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496496.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 31210255342 its reverse (24355201213), we get a palindrome (55565456555).

The spelling of 31210255342 in words is "thirty-one billion, two hundred ten million, two hundred fifty-five thousand, three hundred forty-two".