131635231 has 16 divisors (see below), whose sum is σ = 162598464. Its totient is φ = 103774464.

The previous prime is 131635223. The next prime is 131635241. The reversal of 131635231 is 132536131.

It is a cyclic number.

It is not a de Polignac number, because 131635231 - 2³ = 131635223 is a prime.

It is a super-2 number, since 2×131635231² = 34655668080846722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131635196 and 131635205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131635241) 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, 24195 + ... + 29131.

It is an arithmetic number, because the mean of its divisors is an integer number (10162404).

Almost surely, 2^131635231 is an apocalyptic number.

131635231 is a deficient number, since it is larger than the sum of its proper divisors (30963233).

131635231 is a wasteful number, since it uses less digits than its factorization.

131635231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250.

The product of its digits is 1620, while the sum is 25.

The square root of 131635231 is about 11473.2397778483. The cubic root of 131635231 is about 508.6948957818.

The spelling of 131635231 in words is "one hundred thirty-one million, six hundred thirty-five thousand, two hundred thirty-one".