31301020232 has 16 divisors (see below), whose sum is σ = 58932941100. Its totient is φ = 15585569280.

The previous prime is 31301020151. The next prime is 31301020243. The reversal of 31301020232 is 23202010313.

It can be written as a sum of positive squares in 2 ways, for example, as 28861252996 + 2439767236 = 169886^2 + 49394^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31301020232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8115557 + ... + 8119412.

Almost surely, 2^31301020232 is an apocalyptic number.

It is an amenable number.

31301020232 is a deficient number, since it is larger than the sum of its proper divisors (27631920868).

31301020232 is a wasteful number, since it uses less digits than its factorization.

31301020232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16235216 (or 16235212 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31301020232 its reverse (23202010313), we get a palindrome (54503030545).

The spelling of 31301020232 in words is "thirty-one billion, three hundred one million, twenty thousand, two hundred thirty-two".