30231900 has 72 divisors (see below), whose sum is σ = 97198640. Its totient is φ = 8061120.

The previous prime is 30231863. The next prime is 30231911. The reversal of 30231900 is 913203.

It is a super-2 number, since 2×30231900² = 1827935555220000, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2899 + ... + 8298.

Almost surely, 2^30231900 is an apocalyptic number.

30231900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30231900 is an abundant number, since it is smaller than the sum of its proper divisors (66966740).

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

30231900 is a wasteful number, since it uses less digits than its factorization.

30231900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11220 (or 11207 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30231900 is about 5498.3542992426. The cubic root of 30231900 is about 311.5218266944.

The spelling of 30231900 in words is "thirty million, two hundred thirty-one thousand, nine hundred".