31432980 has 48 divisors (see below), whose sum is σ = 90397440. Its totient is φ = 8155008.

The previous prime is 31432969. The next prime is 31432991. The reversal of 31432980 is 8923413.

It is an interprime number because it is at equal distance from previous prime (31432969) and next prime (31432991).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4860 + ... + 9299.

It is an arithmetic number, because the mean of its divisors is an integer number (1883280).

Almost surely, 2^31432980 is an apocalyptic number.

31432980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31432980 is an abundant number, since it is smaller than the sum of its proper divisors (58964460).

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

31432980 is a wasteful number, since it uses less digits than its factorization.

31432980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14208 (or 14206 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 31432980 is about 5606.5122848345. The cubic root of 31432980 is about 315.5938407301.

The spelling of 31432980 in words is "thirty-one million, four hundred thirty-two thousand, nine hundred eighty".