31020424204 has 24 divisors (see below), whose sum is σ = 67680926208. Its totient is φ = 12085879440.

The previous prime is 31020424199. The next prime is 31020424217. The reversal of 31020424204 is 40242402013.

It is a happy number.

It is a super-2 number, since 2×31020424204² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50357524 + ... + 50358139.

It is an arithmetic number, because the mean of its divisors is an integer number (2820038592).

Almost surely, 2^31020424204 is an apocalyptic number.

It is an amenable number.

31020424204 is an abundant number, since it is smaller than the sum of its proper divisors (36660502004).

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

31020424204 is a wasteful number, since it uses less digits than its factorization.

31020424204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100715685 (or 100715683 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 31020424204 its reverse (40242402013), we get a palindrome (71262826217).

The spelling of 31020424204 in words is "thirty-one billion, twenty million, four hundred twenty-four thousand, two hundred four".