131000420 has 24 divisors (see below), whose sum is σ = 283976448. Its totient is φ = 50709600.

The previous prime is 131000399. The next prime is 131000423. The reversal of 131000420 is 24000131.

It is a happy number.

It is a super-2 number, since 2×131000420² = 34322220080352800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131000423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105026 + ... + 106265.

It is an arithmetic number, because the mean of its divisors is an integer number (11832352).

Almost surely, 2^131000420 is an apocalyptic number.

131000420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131000420 is an abundant number, since it is smaller than the sum of its proper divisors (152976028).

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

131000420 is a wasteful number, since it uses less digits than its factorization.

131000420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211331 (or 211329 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 131000420 is about 11445.5414900301. The cubic root of 131000420 is about 507.8758505802.

Adding to 131000420 its reverse (24000131), we get a palindrome (155000551).

The spelling of 131000420 in words is "one hundred thirty-one million, four hundred twenty", and thus it is an aban number.