1515230131 has 2 divisors, whose sum is σ = 1515230132. Its totient is φ = 1515230130.

The previous prime is 1515230117. The next prime is 1515230137. The reversal of 1515230131 is 1310325151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1515230131 - 2¹⁵ = 1515197363 is a prime.

It is a super-2 number, since 2×1515230131² = 4591844699780554322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1515230137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 757615065 + 757615066.

It is an arithmetic number, because the mean of its divisors is an integer number (757615066).

Almost surely, 2^1515230131 is an apocalyptic number.

1515230131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1515230131 is an equidigital number, since it uses as much as digits as its factorization.

1515230131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1515230131 is about 38925.9570338354. The cubic root of 1515230131 is about 1148.5754587889.

Adding to 1515230131 its reverse (1310325151), we get a palindrome (2825555282).

It can be divided in two parts, 1515230 and 131, that added together give a square (1515361 = 1231²).

The spelling of 1515230131 in words is "one billion, five hundred fifteen million, two hundred thirty thousand, one hundred thirty-one".