131156475 has 24 divisors (see below), whose sum is σ = 217581312. Its totient is φ = 69712800.

The previous prime is 131156471. The next prime is 131156489. The reversal of 131156475 is 574651131.

It is not a de Polignac number, because 131156475 - 2² = 131156471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131156471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20514 + ... + 26136.

It is an arithmetic number, because the mean of its divisors is an integer number (9065888).

Almost surely, 2^131156475 is an apocalyptic number.

131156475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131156475 is a deficient number, since it is larger than the sum of its proper divisors (86424837).

131156475 is a wasteful number, since it uses less digits than its factorization.

131156475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947 (or 5942 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 131156475 is about 11452.3567443562. The cubic root of 131156475 is about 508.0774405574.

The spelling of 131156475 in words is "one hundred thirty-one million, one hundred fifty-six thousand, four hundred seventy-five".