31020203124 has 48 divisors (see below), whose sum is σ = 81219042240. Its totient is φ = 10237687200.

The previous prime is 31020203119. The next prime is 31020203141. The reversal of 31020203124 is 42130202013.

31020203124 is a `hidden beast` number, since 310 + 20 + 20 + 312 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31020203097 and 31020203106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1410994 + ... + 1432809.

It is an arithmetic number, because the mean of its divisors is an integer number (1692063380).

Almost surely, 2^31020203124 is an apocalyptic number.

It is an amenable number.

31020203124 is an abundant number, since it is smaller than the sum of its proper divisors (50198839116).

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

31020203124 is a wasteful number, since it uses less digits than its factorization.

31020203124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843917 (or 2843909 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31020203124 its reverse (42130202013), we get a palindrome (73150405137).

The spelling of 31020203124 in words is "thirty-one billion, twenty million, two hundred three thousand, one hundred twenty-four".