131113620 has 96 divisors (see below), whose sum is σ = 445011840. Its totient is φ = 31783680.

The previous prime is 131113589. The next prime is 131113637. The reversal of 131113620 is 26311131.

131113620 is a `hidden beast` number, since 1 + 31 + 1 + 13 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131113593 and 131113602.

It is a congruent number.

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, 5097 + ... + 16976.

It is an arithmetic number, because the mean of its divisors is an integer number (4635540).

Almost surely, 2^131113620 is an apocalyptic number.

131113620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131113620 is an abundant number, since it is smaller than the sum of its proper divisors (313898220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131113620 is a wasteful number, since it uses less digits than its factorization.

131113620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22102 (or 22094 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 131113620 is about 11450.4855792233. The cubic root of 131113620 is about 508.0220969163.

Adding to 131113620 its reverse (26311131), we get a palindrome (157424751).

The spelling of 131113620 in words is "one hundred thirty-one million, one hundred thirteen thousand, six hundred twenty".