131491070 has 16 divisors (see below), whose sum is σ = 237994848. Its totient is φ = 52305120.

The previous prime is 131491067. The next prime is 131491099. The reversal of 131491070 is 70194131.

It is a Curzon number.

It is a congruent number.

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, 34514 + ... + 38133.

It is an arithmetic number, because the mean of its divisors is an integer number (14874678).

Almost surely, 2^131491070 is an apocalyptic number.

131491070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131491070 is a deficient number, since it is larger than the sum of its proper divisors (106503778).

131491070 is a wasteful number, since it uses less digits than its factorization.

131491070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72835.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 131491070 is about 11466.9555680660. The cubic root of 131491070 is about 508.5091280070.

The spelling of 131491070 in words is "one hundred thirty-one million, four hundred ninety-one thousand, seventy".