31324431430 has 64 divisors (see below), whose sum is σ = 58706767872. Its totient is φ = 12021102720.

The previous prime is 31324431427. The next prime is 31324431433. The reversal of 31324431430 is 3413442313.

It is an interprime number because it is at equal distance from previous prime (31324431427) and next prime (31324431433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31324431433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19491687 + ... + 19493293.

It is an arithmetic number, because the mean of its divisors is an integer number (917293248).

Almost surely, 2^31324431430 is an apocalyptic number.

31324431430 is a deficient number, since it is larger than the sum of its proper divisors (27382336442).

31324431430 is a wasteful number, since it uses less digits than its factorization.

31324431430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31324431430 its reverse (3413442313), we get a palindrome (34737873743).

The spelling of 31324431430 in words is "thirty-one billion, three hundred twenty-four million, four hundred thirty-one thousand, four hundred thirty".