131354540 has 24 divisors (see below), whose sum is σ = 278579952. Its totient is φ = 52020800.

The previous prime is 131354479. The next prime is 131354567. The reversal of 131354540 is 45453131.

It is a super-2 number, since 2×131354540² = 34508030357223200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30494 + ... + 34533.

It is an arithmetic number, because the mean of its divisors is an integer number (11607498).

Almost surely, 2^131354540 is an apocalyptic number.

131354540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131354540 is an abundant number, since it is smaller than the sum of its proper divisors (147225412).

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

131354540 is a wasteful number, since it uses less digits than its factorization.

131354540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65137 (or 65135 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 131354540 is about 11461.0008288980. Note that the first 3 decimals coincide. The cubic root of 131354540 is about 508.3330684104. Note that the first 3 decimals are identical.

The spelling of 131354540 in words is "one hundred thirty-one million, three hundred fifty-four thousand, five hundred forty".