125131 has 2 divisors, whose sum is σ = 125132. Its totient is φ = 125130.

The previous prime is 125119. The next prime is 125141. The reversal of 125131 is 131521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125131 - 2⁷ = 125003 is a prime.

It is a super-2 number, since 2×125131² = 31315534322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62565 + 62566.

It is an arithmetic number, because the mean of its divisors is an integer number (62566).

2¹²⁵¹³¹ is an apocalyptic number.

125131 is a deficient number, since it is larger than the sum of its proper divisors (1).

125131 is an equidigital number, since it uses as much as digits as its factorization.

125131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30, while the sum is 13.

The square root of 125131 is about 353.7386040567. The cubic root of 125131 is about 50.0174605685.

Adding to 125131 its reverse (131521), we get a palindrome (256652).

It can be divided in two parts, 1251 and 31, that multiplied together give a triangular number (38781 = T₂₇₈).

The spelling of 125131 in words is "one hundred twenty-five thousand, one hundred thirty-one".