3137157461 has 4 divisors (see below), whose sum is σ = 3138289932. Its totient is φ = 3136024992.

The previous prime is 3137157451. The next prime is 3137157481. The reversal of 3137157461 is 1647517313.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2068521361 + 1068636100 = 45481^2 + 32690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3137157461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3137157451) 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, 562070 + ... + 567623.

It is an arithmetic number, because the mean of its divisors is an integer number (784572483).

Almost surely, 2^3137157461 is an apocalyptic number.

It is an amenable number.

3137157461 is a deficient number, since it is larger than the sum of its proper divisors (1132471).

3137157461 is a wasteful number, since it uses less digits than its factorization.

3137157461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132470.

The product of its digits is 52920, while the sum is 38.

The square root of 3137157461 is about 56010.3335198069. Note that the first 3 decimals coincide. The cubic root of 3137157461 is about 1463.9023427958.

The spelling of 3137157461 in words is "three billion, one hundred thirty-seven million, one hundred fifty-seven thousand, four hundred sixty-one".