31020013203000 has 128 divisors (see below), whose sum is σ = 102475526137920. Its totient is φ = 7785415065600.

The previous prime is 31020013202977. The next prime is 31020013203019. The reversal of 31020013203000 is 30231002013.

It is a super-2 number, since 2×31020013203000² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 304066777 + ... + 304168776.

Almost surely, 2^{31020013203000} is an apocalyptic number.

31020013203000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31020013203000 is an abundant number, since it is smaller than the sum of its proper divisors (71455512934920).

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

31020013203000 is a wasteful number, since it uses less digits than its factorization.

31020013203000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608235594 (or 608235580 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31020013203000 its reverse (30231002013), we get a palindrome (31050244205013).

The spelling of 31020013203000 in words is "thirty-one trillion, twenty billion, thirteen million, two hundred three thousand".