31123003201002 has 48 divisors (see below), whose sum is σ = 67933613329920. Its totient is φ = 10297628301600.

The previous prime is 31123003201001. The next prime is 31123003201013. The reversal of 31123003201002 is 20010230032113.

31123003201002 is a `hidden beast` number, since 3 + 11 + 230 + 0 + 320 + 100 + 2 = 666.

It is a super-3 number, since 3×31123003201002³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31123003201001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10547074 + ... + 13171437.

It is an arithmetic number, because the mean of its divisors is an integer number (1415283611040).

Almost surely, 2^{31123003201002} is an apocalyptic number.

31123003201002 is an abundant number, since it is smaller than the sum of its proper divisors (36810610128918).

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

31123003201002 is a wasteful number, since it uses less digits than its factorization.

31123003201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23719059 (or 23719056 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31123003201002 its reverse (20010230032113), we get a palindrome (51133233233115).

The spelling of 31123003201002 in words is "thirty-one trillion, one hundred twenty-three billion, three million, two hundred one thousand, two".