136980831 has 24 divisors (see below), whose sum is σ = 200278960. Its totient is φ = 82785024.

The previous prime is 136980829. The next prime is 136980839. The reversal of 136980831 is 138089631.

It is not a de Polignac number, because 136980831 - 2¹ = 136980829 is a prime.

It is a super-2 number, since 2×136980831² = 37527496122901122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136980831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136980839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135255 + ... + 136263.

Almost surely, 2^136980831 is an apocalyptic number.

136980831 is a deficient number, since it is larger than the sum of its proper divisors (63298129).

136980831 is a wasteful number, since it uses less digits than its factorization.

136980831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 136980831 is about 11703.8810229770. The cubic root of 136980831 is about 515.4896289185.

The spelling of 136980831 in words is "one hundred thirty-six million, nine hundred eighty thousand, eight hundred thirty-one".