423131502 has 16 divisors (see below), whose sum is σ = 860136912. Its totient is φ = 138731520.

The previous prime is 423131491. The next prime is 423131507. The reversal of 423131502 is 205131324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423131507) 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, 577683 + ... + 578414.

It is an arithmetic number, because the mean of its divisors is an integer number (53758557).

Almost surely, 2^423131502 is an apocalyptic number.

423131502 is an abundant number, since it is smaller than the sum of its proper divisors (437005410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423131502 is a wasteful number, since it uses less digits than its factorization.

423131502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156163.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 423131502 is about 20570.1604757960. The cubic root of 423131502 is about 750.7438557720.

Adding to 423131502 its reverse (205131324), we get a palindrome (628262826).

The spelling of 423131502 in words is "four hundred twenty-three million, one hundred thirty-one thousand, five hundred two".