131432490 has 128 divisors (see below), whose sum is σ = 403729920. Its totient is φ = 29804544.

The previous prime is 131432479. The next prime is 131432501. The reversal of 131432490 is 94234131.

131432490 is a `hidden beast` number, since 131 + 43 + 2 + 490 = 666.

It is an interprime number because it is at equal distance from previous prime (131432479) and next prime (131432501).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 372154 + ... + 372506.

It is an arithmetic number, because the mean of its divisors is an integer number (3154140).

Almost surely, 2^131432490 is an apocalyptic number.

131432490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131432490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201864960).

131432490 is an abundant number, since it is smaller than the sum of its proper divisors (272297430).

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

131432490 is a wasteful number, since it uses less digits than its factorization.

131432490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 131432490 is about 11464.4009874044. The cubic root of 131432490 is about 508.4336022458.

The spelling of 131432490 in words is "one hundred thirty-one million, four hundred thirty-two thousand, four hundred ninety".