31101200104 has 32 divisors (see below), whose sum is σ = 64966041000. Its totient is φ = 13859419392.

The previous prime is 31101200087. The next prime is 31101200107. The reversal of 31101200104 is 40100210113.

It can be written as a sum of positive squares in 4 ways, for example, as 27572602500 + 3528597604 = 166050^2 + 59402^2 .

It is a super-2 number, since 2×31101200104² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (31101200107) 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, 5153019 + ... + 5159050.

Almost surely, 2^31101200104 is an apocalyptic number.

It is an amenable number.

31101200104 is an abundant number, since it is smaller than the sum of its proper divisors (33864840896).

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

31101200104 is a wasteful number, since it uses less digits than its factorization.

31101200104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10312117 (or 10312113 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31101200104 its reverse (40100210113), we get a palindrome (71201410217).

The spelling of 31101200104 in words is "thirty-one billion, one hundred one million, two hundred thousand, one hundred four".