1523132115631 has 16 divisors (see below), whose sum is σ = 1745737634880. Its totient is φ = 1301783535360.

The previous prime is 1523132115569. The next prime is 1523132115683. The reversal of 1523132115631 is 1365112313251.

It is not a de Polignac number, because 1523132115631 - 2²⁹ = 1522595244719 is a prime.

It is a super-4 number, since 4×1523132115631⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523132115031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5755755 + ... + 6014563.

It is an arithmetic number, because the mean of its divisors is an integer number (109108602180).

Almost surely, 2^{1523132115631} is an apocalyptic number.

1523132115631 is a deficient number, since it is larger than the sum of its proper divisors (222605519249).

1523132115631 is a wasteful number, since it uses less digits than its factorization.

1523132115631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261234.

The product of its digits is 16200, while the sum is 34.

Adding to 1523132115631 its reverse (1365112313251), we get a palindrome (2888244428882).

The spelling of 1523132115631 in words is "one trillion, five hundred twenty-three billion, one hundred thirty-two million, one hundred fifteen thousand, six hundred thirty-one".