31004040223 has 32 divisors (see below), whose sum is σ = 35370965952. Its totient is φ = 26983756800.

The previous prime is 31004040217. The next prime is 31004040247. The reversal of 31004040223 is 32204040013.

It is not a de Polignac number, because 31004040223 - 2¹⁷ = 31003909151 is a prime.

It is a super-2 number, since 2×31004040223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31004040223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31004040293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884493 + ... + 1900873.

It is an arithmetic number, because the mean of its divisors is an integer number (1105342686).

Almost surely, 2^31004040223 is an apocalyptic number.

31004040223 is a deficient number, since it is larger than the sum of its proper divisors (4366925729).

31004040223 is a wasteful number, since it uses less digits than its factorization.

31004040223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16555.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 31004040223 its reverse (32204040013), we get a palindrome (63208080236).

The spelling of 31004040223 in words is "thirty-one billion, four million, forty thousand, two hundred twenty-three".