131503172542 has 16 divisors (see below), whose sum is σ = 225446733792. Its totient is φ = 56355321600.

The previous prime is 131503172519. The next prime is 131503172551. The reversal of 131503172542 is 245271305131.

It is a super-2 number, since 2×131503172542² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131503172498 and 131503172507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042 + ... + 512842.

It is an arithmetic number, because the mean of its divisors is an integer number (14090420862).

Almost surely, 2^131503172542 is an apocalyptic number.

131503172542 is a deficient number, since it is larger than the sum of its proper divisors (93943561250).

131503172542 is a wasteful number, since it uses less digits than its factorization.

131503172542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530163.

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 131503172542 its reverse (245271305131), we get a palindrome (376774477673).

The spelling of 131503172542 in words is "one hundred thirty-one billion, five hundred three million, one hundred seventy-two thousand, five hundred forty-two".