30431420 has 12 divisors (see below), whose sum is σ = 63906024. Its totient is φ = 12172560.

The previous prime is 30431417. The next prime is 30431441. The reversal of 30431420 is 2413403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760766 + ... + 760805.

It is an arithmetic number, because the mean of its divisors is an integer number (5325502).

Almost surely, 2^30431420 is an apocalyptic number.

It is an amenable number.

30431420 is an abundant number, since it is smaller than the sum of its proper divisors (33474604).

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

30431420 is a wasteful number, since it uses less digits than its factorization.

30431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521580 (or 1521578 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30431420 is about 5516.4680729612. The cubic root of 30431420 is about 312.2056364073.

Adding to 30431420 its reverse (2413403), we get a palindrome (32844823).

The spelling of 30431420 in words is "thirty million, four hundred thirty-one thousand, four hundred twenty".