103131525 has 96 divisors (see below), whose sum is σ = 210304000. Its totient is φ = 44452800.

The previous prime is 103131499. The next prime is 103131527. The reversal of 103131525 is 525131301.

It is not a de Polignac number, because 103131525 - 2⁶ = 103131461 is a prime.

It is a super-2 number, since 2×103131525² = 21272222897651250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103131527) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 488670 + ... + 488880.

Almost surely, 2^103131525 is an apocalyptic number.

103131525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103131525 is an abundant number, since it is smaller than the sum of its proper divisors (107172475).

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

103131525 is a wasteful number, since it uses less digits than its factorization.

103131525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 103131525 is about 10155.3692695047. The cubic root of 103131525 is about 468.9542540961.

Adding to 103131525 its reverse (525131301), we get a palindrome (628262826).

The spelling of 103131525 in words is "one hundred three million, one hundred thirty-one thousand, five hundred twenty-five".