31130012342 has 32 divisors (see below), whose sum is σ = 55277316864. Its totient is φ = 12961821600.

The previous prime is 31130012341. The next prime is 31130012371. The reversal of 31130012342 is 24321003113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130012341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377978 + ... + 452909.

It is an arithmetic number, because the mean of its divisors is an integer number (1727416152).

Almost surely, 2^31130012342 is an apocalyptic number.

31130012342 is a deficient number, since it is larger than the sum of its proper divisors (24147304522).

31130012342 is a wasteful number, since it uses less digits than its factorization.

31130012342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831044.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31130012342 its reverse (24321003113), we get a palindrome (55451015455).

The spelling of 31130012342 in words is "thirty-one billion, one hundred thirty million, twelve thousand, three hundred forty-two".