31004402222 has 16 divisors (see below), whose sum is σ = 50940297360. Its totient is φ = 14087192448.

The previous prime is 31004402197. The next prime is 31004402263. The reversal of 31004402222 is 22220440013.

It is a super-2 number, since 2×31004402222² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31004402194 and 31004402203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15721328 + ... + 15723299.

It is an arithmetic number, because the mean of its divisors is an integer number (3183768585).

Almost surely, 2^31004402222 is an apocalyptic number.

31004402222 is a deficient number, since it is larger than the sum of its proper divisors (19935895138).

31004402222 is a wasteful number, since it uses less digits than its factorization.

31004402222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31444675.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 31004402222 its reverse (22220440013), we get a palindrome (53224842235).

The spelling of 31004402222 in words is "thirty-one billion, four million, four hundred two thousand, two hundred twenty-two".