131024431155 has 16 divisors (see below), whose sum is σ = 210093849504. Its totient is φ = 69728110080.

The previous prime is 131024431151. The next prime is 131024431201. The reversal of 131024431155 is 551134420131.

It is not a de Polignac number, because 131024431155 - 2² = 131024431151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131024431151) 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, 9467014 + ... + 9480843.

It is an arithmetic number, because the mean of its divisors is an integer number (13130865594).

Almost surely, 2^131024431155 is an apocalyptic number.

131024431155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131024431155 is a deficient number, since it is larger than the sum of its proper divisors (79069418349).

131024431155 is a wasteful number, since it uses less digits than its factorization.

131024431155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18948326.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 131024431155 its reverse (551134420131), we get a palindrome (682158851286).

The spelling of 131024431155 in words is "one hundred thirty-one billion, twenty-four million, four hundred thirty-one thousand, one hundred fifty-five".