420123431031 has 16 divisors (see below), whose sum is σ = 566107774848. Its totient is φ = 277114580000.

The previous prime is 420123431023. The next prime is 420123431041. The reversal of 420123431031 is 130134321024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420123431031 - 2³ = 420123431023 is a prime.

It is a super-2 number, since 2×420123431031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420123430992 and 420123431010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420123431041) 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, 53445 + ... + 918206.

It is an arithmetic number, because the mean of its divisors is an integer number (35381735928).

Almost surely, 2^420123431031 is an apocalyptic number.

420123431031 is a deficient number, since it is larger than the sum of its proper divisors (145984343817).

420123431031 is a wasteful number, since it uses less digits than its factorization.

420123431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973182.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 420123431031 its reverse (130134321024), we get a palindrome (550257752055).

The spelling of 420123431031 in words is "four hundred twenty billion, one hundred twenty-three million, four hundred thirty-one thousand, thirty-one".