131313420 has 96 divisors (see below), whose sum is σ = 466905600. Its totient is φ = 30013632.

The previous prime is 131313341. The next prime is 131313431. The reversal of 131313420 is 24313131.

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 = 131313393 and 131313402.

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, 13590 + ... + 21149.

It is an arithmetic number, because the mean of its divisors is an integer number (4863600).

Almost surely, 2^131313420 is an apocalyptic number.

131313420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131313420 is an abundant number, since it is smaller than the sum of its proper divisors (335592180).

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

131313420 is a wasteful number, since it uses less digits than its factorization.

131313420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34764 (or 34756 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 131313420 is about 11459.2067788307. The cubic root of 131313420 is about 508.2800190137.

Adding to 131313420 its reverse (24313131), we get a palindrome (155626551).

The spelling of 131313420 in words is "one hundred thirty-one million, three hundred thirteen thousand, four hundred twenty".