131511051 has 18 divisors (see below), whose sum is σ = 220975092. Its totient is φ = 75148920.

The previous prime is 131511047. The next prime is 131511053. The reversal of 131511051 is 150115131.

It is not a de Polignac number, because 131511051 - 2² = 131511047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131511053) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 148665 + ... + 149546.

It is an arithmetic number, because the mean of its divisors is an integer number (12276394).

Almost surely, 2^131511051 is an apocalyptic number.

131511051 is a deficient number, since it is larger than the sum of its proper divisors (89464041).

131511051 is a wasteful number, since it uses less digits than its factorization.

131511051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298231 (or 298221 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 18.

The square root of 131511051 is about 11467.8267775547. The cubic root of 131511051 is about 508.5348838911.

Adding to 131511051 its reverse (150115131), we get a palindrome (281626182).

The spelling of 131511051 in words is "one hundred thirty-one million, five hundred eleven thousand, fifty-one".