421432240031131 has 48 divisors (see below), whose sum is σ = 509793498762240. Its totient is φ = 346991276520000.

The previous prime is 421432240031123. The next prime is 421432240031141. The reversal of 421432240031131 is 131130042234124.

It is a happy number.

It is not a de Polignac number, because 421432240031131 - 2³ = 421432240031123 is a prime.

It is a super-2 number, since 2×421432240031131² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 421432240031093 and 421432240031102.

It is not an unprimeable number, because it can be changed into a prime (421432240031141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1076834596 + ... + 1077225886.

It is an arithmetic number, because the mean of its divisors is an integer number (10620697890880).

Almost surely, 2^{421432240031131} is an apocalyptic number.

421432240031131 is a deficient number, since it is larger than the sum of its proper divisors (88361258731109).

421432240031131 is a wasteful number, since it uses less digits than its factorization.

421432240031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396576 (or 396569 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 421432240031131 its reverse (131130042234124), we get a palindrome (552562282265255).

The spelling of 421432240031131 in words is "four hundred twenty-one trillion, four hundred thirty-two billion, two hundred forty million, thirty-one thousand, one hundred thirty-one".