420143535131231 has 16 divisors (see below), whose sum is σ = 443910136639680. Its totient is φ = 396846907564800.

The previous prime is 420143535131219. The next prime is 420143535131273. The reversal of 420143535131231 is 132131535341024.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420143535131231 is a prime.

It is a super-2 number, since 2×420143535131231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420143535191231) 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, 131178620 + ... + 134343281.

It is an arithmetic number, because the mean of its divisors is an integer number (27744383539980).

Almost surely, 2^{420143535131231} is an apocalyptic number.

420143535131231 is a deficient number, since it is larger than the sum of its proper divisors (23766601508449).

420143535131231 is a wasteful number, since it uses less digits than its factorization.

420143535131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265522786.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 420143535131231 in words is "four hundred twenty trillion, one hundred forty-three billion, five hundred thirty-five million, one hundred thirty-one thousand, two hundred thirty-one".