402431020023 has 8 divisors (see below), whose sum is σ = 537106486000. Its totient is φ = 268021450368.

The previous prime is 402431020007. The next prime is 402431020049. The reversal of 402431020023 is 320020134204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402431020023 - 2⁴ = 402431020007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402431820023) 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, 66470548 + ... + 66476601.

It is an arithmetic number, because the mean of its divisors is an integer number (67138310750).

Almost surely, 2^402431020023 is an apocalyptic number.

402431020023 is a deficient number, since it is larger than the sum of its proper divisors (134675465977).

402431020023 is a wasteful number, since it uses less digits than its factorization.

402431020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132948161.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 402431020023 its reverse (320020134204), we get a palindrome (722451154227).

The spelling of 402431020023 in words is "four hundred two billion, four hundred thirty-one million, twenty thousand, twenty-three".