612131 has 4 divisors (see below), whose sum is σ = 659232. Its totient is φ = 565032.

The previous prime is 612113. The next prime is 612133. The reversal of 612131 is 131216.

612131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 612131 - 2⁶ = 612067 is a prime.

It is a super-2 number, since 2×612131² = 749408722322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23531 + ... + 23556.

It is an arithmetic number, because the mean of its divisors is an integer number (164808).

2⁶¹²¹³¹ is an apocalyptic number.

612131 is a deficient number, since it is larger than the sum of its proper divisors (47101).

612131 is a wasteful number, since it uses less digits than its factorization.

612131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47100.

The product of its digits is 36, while the sum is 14.

The square root of 612131 is about 782.3880111556. The cubic root of 612131 is about 84.9079048671.

Adding to 612131 its reverse (131216), we get a palindrome (743347).

The spelling of 612131 in words is "six hundred twelve thousand, one hundred thirty-one".