31371188852 has 24 divisors (see below), whose sum is σ = 55549557000. Its totient is φ = 15500097536.

The previous prime is 31371188851. The next prime is 31371188861. The reversal of 31371188852 is 25888117313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2483427556 + 28887761296 = 49834^2 + 169964^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31371188797 and 31371188806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31371188851) 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, 591524 + ... + 642372.

It is an arithmetic number, because the mean of its divisors is an integer number (2314564875).

Almost surely, 2^31371188852 is an apocalyptic number.

It is an amenable number.

31371188852 is a deficient number, since it is larger than the sum of its proper divisors (24178368148).

31371188852 is a wasteful number, since it uses less digits than its factorization.

31371188852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52675 (or 52673 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The spelling of 31371188852 in words is "thirty-one billion, three hundred seventy-one million, one hundred eighty-eight thousand, eight hundred fifty-two".