30971480 has 32 divisors (see below), whose sum is σ = 71936640. Its totient is φ = 11988480.

The previous prime is 30971477. The next prime is 30971483. The reversal of 30971480 is 8417903.

It is an interprime number because it is at equal distance from previous prime (30971477) and next prime (30971483).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30971483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11249 + ... + 13728.

It is an arithmetic number, because the mean of its divisors is an integer number (2248020).

Almost surely, 2^30971480 is an apocalyptic number.

It is an amenable number.

30971480 is an abundant number, since it is smaller than the sum of its proper divisors (40965160).

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

30971480 is a wasteful number, since it uses less digits than its factorization.

30971480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25019 (or 25015 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 30971480 is about 5565.2026018825. The cubic root of 30971480 is about 314.0417000078.

The spelling of 30971480 in words is "thirty million, nine hundred seventy-one thousand, four hundred eighty".