131121575 has 24 divisors (see below), whose sum is σ = 176842848. Its totient is φ = 95863680.

The previous prime is 131121569. The next prime is 131121581. The reversal of 131121575 is 575121131.

It is an interprime number because it is at equal distance from previous prime (131121569) and next prime (131121581).

It is not a de Polignac number, because 131121575 - 2⁴ = 131121559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31517 + ... + 35433.

It is an arithmetic number, because the mean of its divisors is an integer number (7368452).

Almost surely, 2^131121575 is an apocalyptic number.

131121575 is a deficient number, since it is larger than the sum of its proper divisors (45721273).

131121575 is a wasteful number, since it uses less digits than its factorization.

131121575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043 (or 4038 counting only the distinct ones).

The product of its digits is 1050, while the sum is 26.

The square root of 131121575 is about 11450.8329391359. The cubic root of 131121575 is about 508.0323710436.

The spelling of 131121575 in words is "one hundred thirty-one million, one hundred twenty-one thousand, five hundred seventy-five".