131230155 has 16 divisors (see below), whose sum is σ = 239963904. Its totient is φ = 59990880.

The previous prime is 131230147. The next prime is 131230189. The reversal of 131230155 is 551032131.

It is not a de Polignac number, because 131230155 - 2³ = 131230147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624801 + ... + 625010.

It is an arithmetic number, because the mean of its divisors is an integer number (14997744).

Almost surely, 2^131230155 is an apocalyptic number.

131230155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131230155 is a deficient number, since it is larger than the sum of its proper divisors (108733749).

131230155 is a wasteful number, since it uses less digits than its factorization.

131230155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249826.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 131230155 is about 11455.5730978419. The cubic root of 131230155 is about 508.1725639282.

Adding to 131230155 its reverse (551032131), we get a palindrome (682262286).

The spelling of 131230155 in words is "one hundred thirty-one million, two hundred thirty thousand, one hundred fifty-five".