131412421 has 16 divisors (see below), whose sum is σ = 154522368. Its totient is φ = 109411200.

The previous prime is 131412403. The next prime is 131412433. The reversal of 131412421 is 124214131.

It is a cyclic number.

It is not a de Polignac number, because 131412421 - 2⁵ = 131412389 is a prime.

It is a super-4 number, since 4×131412421⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131412451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74611 + ... + 76351.

It is an arithmetic number, because the mean of its divisors is an integer number (9657648).

Almost surely, 2^131412421 is an apocalyptic number.

It is an amenable number.

131412421 is a deficient number, since it is larger than the sum of its proper divisors (23109947).

131412421 is a wasteful number, since it uses less digits than its factorization.

131412421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052.

The product of its digits is 192, while the sum is 19.

The square root of 131412421 is about 11463.5256793013. The cubic root of 131412421 is about 508.4077226139.

Adding to 131412421 its reverse (124214131), we get a palindrome (255626552).

The spelling of 131412421 in words is "one hundred thirty-one million, four hundred twelve thousand, four hundred twenty-one".