31003220104 has 8 divisors (see below), whose sum is σ = 58131037710. Its totient is φ = 15501610048.

The previous prime is 31003220099. The next prime is 31003220167. The reversal of 31003220104 is 40102230013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29443128100 + 1560092004 = 171590^2 + 39498^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31003220104² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1937701249 + ... + 1937701264.

Almost surely, 2^31003220104 is an apocalyptic number.

It is an amenable number.

31003220104 is a deficient number, since it is larger than the sum of its proper divisors (27127817606).

31003220104 is a wasteful number, since it uses less digits than its factorization.

31003220104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875402519 (or 3875402515 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31003220104 its reverse (40102230013), we get a palindrome (71105450117).

Subtracting 31003220104 from its reverse (40102230013), we obtain a palindrome (9099009909).

The spelling of 31003220104 in words is "thirty-one billion, three million, two hundred twenty thousand, one hundred four".