609403031 has 4 divisors (see below), whose sum is σ = 609600432. Its totient is φ = 609205632.

The previous prime is 609402953. The next prime is 609403037. The reversal of 609403031 is 130304906.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 609403031 - 2¹⁸ = 609140887 is a prime.

It is a super-2 number, since 2×609403031² = 742744108383973922, which 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 (609403037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93995 + ... + 100268.

It is an arithmetic number, because the mean of its divisors is an integer number (152400108).

Almost surely, 2^609403031 is an apocalyptic number.

609403031 is a deficient number, since it is larger than the sum of its proper divisors (197401).

609403031 is a wasteful number, since it uses less digits than its factorization.

609403031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197400.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 609403031 is about 24686.0898280793. The cubic root of 609403031 is about 847.8158600821.

Adding to 609403031 its reverse (130304906), we get a palindrome (739707937).

The spelling of 609403031 in words is "six hundred nine million, four hundred three thousand, thirty-one".