31302012340 has 24 divisors (see below), whose sum is σ = 65834002080. Its totient is φ = 12501799968.

The previous prime is 31302012319. The next prime is 31302012341. The reversal of 31302012340 is 4321020313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302012341) 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, 1174302 + ... + 1200661.

It is an arithmetic number, because the mean of its divisors is an integer number (2743083420).

Almost surely, 2^31302012340 is an apocalyptic number.

It is an amenable number.

31302012340 is an abundant number, since it is smaller than the sum of its proper divisors (34531989740).

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

31302012340 is a wasteful number, since it uses less digits than its factorization.

31302012340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375631 (or 2375629 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31302012340 its reverse (4321020313), we get a palindrome (35623032653).

The spelling of 31302012340 in words is "thirty-one billion, three hundred two million, twelve thousand, three hundred forty".