131751840 has 96 divisors (see below), whose sum is σ = 452765376. Its totient is φ = 31938560.

The previous prime is 131751839. The next prime is 131751859. The reversal of 131751840 is 48157131.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a junction number, because it is equal to n+sod(n) for n = 131751798 and 131751807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7197 + ... + 17756.

It is an arithmetic number, because the mean of its divisors is an integer number (4716306).

Almost surely, 2^131751840 is an apocalyptic number.

131751840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131751840 is an abundant number, since it is smaller than the sum of its proper divisors (321013536).

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

131751840 is a wasteful number, since it uses less digits than its factorization.

131751840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24982 (or 24974 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 131751840 is about 11478.3204346281. The cubic root of 131751840 is about 508.8450604845.

The spelling of 131751840 in words is "one hundred thirty-one million, seven hundred fifty-one thousand, eight hundred forty".