31103242000 has 40 divisors (see below), whose sum is σ = 75207643992. Its totient is φ = 12441296000.

The previous prime is 31103241943. The next prime is 31103242013. The reversal of 31103242000 is 24230113.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3295678464 + 27807563536 = 57408^2 + 166756^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 7773811 + ... + 7777810.

Almost surely, 2^31103242000 is an apocalyptic number.

It is an amenable number.

31103242000 is an abundant number, since it is smaller than the sum of its proper divisors (44104401992).

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

31103242000 is a wasteful number, since it uses less digits than its factorization.

31103242000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15551644 (or 15551628 counting only the distinct ones).

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

Adding to 31103242000 its reverse (24230113), we get a palindrome (31127472113).

The spelling of 31103242000 in words is "thirty-one billion, one hundred three million, two hundred forty-two thousand".