131869155 has 32 divisors (see below), whose sum is σ = 232968960. Its totient is φ = 63159680.

The previous prime is 131869117. The next prime is 131869163. The reversal of 131869155 is 551968131.

It is not a de Polignac number, because 131869155 - 2¹¹ = 131867107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8881 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (7280280).

Almost surely, 2^131869155 is an apocalyptic number.

131869155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131869155 is a deficient number, since it is larger than the sum of its proper divisors (101099805).

131869155 is a wasteful number, since it uses less digits than its factorization.

131869155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9731.

The product of its digits is 32400, while the sum is 39.

The square root of 131869155 is about 11483.4295835347. The cubic root of 131869155 is about 508.9960449642.

The spelling of 131869155 in words is "one hundred thirty-one million, eight hundred sixty-nine thousand, one hundred fifty-five".