612541131 has 4 divisors (see below), whose sum is σ = 816721512. Its totient is φ = 408360752.

The previous prime is 612541117. The next prime is 612541141. The reversal of 612541131 is 131145216.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 612541131 - 2⁵ = 612541099 is a prime.

It is a super-2 number, since 2×612541131² = 750413274333518322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612541141) 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, 102090186 + ... + 102090191.

It is an arithmetic number, because the mean of its divisors is an integer number (204180378).

Almost surely, 2^612541131 is an apocalyptic number.

612541131 is a deficient number, since it is larger than the sum of its proper divisors (204180381).

612541131 is a wasteful number, since it uses less digits than its factorization.

612541131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204180380.

The product of its digits is 720, while the sum is 24.

The square root of 612541131 is about 24749.5682992653. The cubic root of 612541131 is about 849.2686354839.

Adding to 612541131 its reverse (131145216), we get a palindrome (743686347).

The spelling of 612541131 in words is "six hundred twelve million, five hundred forty-one thousand, one hundred thirty-one".