31311020123302 has 8 divisors (see below), whose sum is σ = 47422515915216. Its totient is φ = 15503514818232.

The previous prime is 31311020123269. The next prime is 31311020123303. The reversal of 31311020123302 is 20332102011313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311020123303) 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 3 ways as a sum of consecutive naturals, for example, 75997621453 + ... + 75997621864.

It is an arithmetic number, because the mean of its divisors is an integer number (5927814489402).

Almost surely, 2^{31311020123302} is an apocalyptic number.

31311020123302 is a deficient number, since it is larger than the sum of its proper divisors (16111495791914).

31311020123302 is a wasteful number, since it uses less digits than its factorization.

31311020123302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151995243422.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31311020123302 its reverse (20332102011313), we get a palindrome (51643122134615).

The spelling of 31311020123302 in words is "thirty-one trillion, three hundred eleven billion, twenty million, one hundred twenty-three thousand, three hundred two".