131023045155 has 64 divisors (see below), whose sum is σ = 228454410240. Its totient is φ = 63904536576.

The previous prime is 131023045147. The next prime is 131023045157. The reversal of 131023045155 is 551540320131.

It is not a de Polignac number, because 131023045155 - 2³ = 131023045147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131023045157) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 910839 + ... + 1044831.

It is an arithmetic number, because the mean of its divisors is an integer number (3569600160).

Almost surely, 2^131023045155 is an apocalyptic number.

131023045155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131023045155 is a deficient number, since it is larger than the sum of its proper divisors (97431365085).

131023045155 is a wasteful number, since it uses less digits than its factorization.

131023045155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134140.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 131023045155 its reverse (551540320131), we get a palindrome (682563365286).

The spelling of 131023045155 in words is "one hundred thirty-one billion, twenty-three million, forty-five thousand, one hundred fifty-five".