30203131020 has 48 divisors (see below), whose sum is σ = 84667591008. Its totient is φ = 8044756480.

The previous prime is 30203131009. The next prime is 30203131031. The reversal of 30203131020 is 2013130203.

It is an interprime number because it is at equal distance from previous prime (30203131009) and next prime (30203131031).

It is a super-2 number, since 2×30203131020² (a number of 22 digits) contains 22 as substring.

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

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, 242271 + ... + 345110.

It is an arithmetic number, because the mean of its divisors is an integer number (1763908146).

Almost surely, 2^30203131020 is an apocalyptic number.

30203131020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30203131020 is an abundant number, since it is smaller than the sum of its proper divisors (54464459988).

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

30203131020 is a wasteful number, since it uses less digits than its factorization.

30203131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588250 (or 588248 counting only the distinct ones).

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

Adding to 30203131020 its reverse (2013130203), we get a palindrome (32216261223).

The spelling of 30203131020 in words is "thirty billion, two hundred three million, one hundred thirty-one thousand, twenty".