8572137131 has 2 divisors, whose sum is σ = 8572137132. Its totient is φ = 8572137130.

The previous prime is 8572137127. The next prime is 8572137151. The reversal of 8572137131 is 1317312758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8572137131 - 2² = 8572137127 is a prime.

It is a super-2 number, since 2×8572137131² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8572137151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4286068565 + 4286068566.

It is an arithmetic number, because the mean of its divisors is an integer number (4286068566).

Almost surely, 2^8572137131 is an apocalyptic number.

8572137131 is a deficient number, since it is larger than the sum of its proper divisors (1).

8572137131 is an equidigital number, since it uses as much as digits as its factorization.

8572137131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The square root of 8572137131 is about 92585.8365572186. The cubic root of 8572137131 is about 2046.5846069121.

Adding to 8572137131 its reverse (1317312758), we get a palindrome (9889449889).

The spelling of 8572137131 in words is "eight billion, five hundred seventy-two million, one hundred thirty-seven thousand, one hundred thirty-one".