131901432 has 32 divisors (see below), whose sum is σ = 355120080. Its totient is φ = 40584960.

The previous prime is 131901431. The next prime is 131901461. The reversal of 131901432 is 234109131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131901431) 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, 211069 + ... + 211692.

Almost surely, 2^131901432 is an apocalyptic number.

131901432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131901432 is an abundant number, since it is smaller than the sum of its proper divisors (223218648).

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

131901432 is a wasteful number, since it uses less digits than its factorization.

131901432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422783 (or 422779 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 131901432 is about 11484.8348703845. The cubic root of 131901432 is about 509.0375697750.

The spelling of 131901432 in words is "one hundred thirty-one million, nine hundred one thousand, four hundred thirty-two".