131155420 has 48 divisors (see below), whose sum is σ = 310173696. Its totient is φ = 46152000.

The previous prime is 131155397. The next prime is 131155439. The reversal of 131155420 is 24551131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 131155391 and 131155400.

It is a congruent number.

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, 2796 + ... + 16435.

It is an arithmetic number, because the mean of its divisors is an integer number (6461952).

Almost surely, 2^131155420 is an apocalyptic number.

131155420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131155420 is an abundant number, since it is smaller than the sum of its proper divisors (179018276).

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

131155420 is a wasteful number, since it uses less digits than its factorization.

131155420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19282 (or 19280 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 131155420 is about 11452.3106838751. The cubic root of 131155420 is about 508.0760782581.

It can be divided in two parts, 131 and 155420, that added together give a palindrome (155551).

The spelling of 131155420 in words is "one hundred thirty-one million, one hundred fifty-five thousand, four hundred twenty".