31002121001330 has 32 divisors (see below), whose sum is σ = 55946240167536. Its totient is φ = 12369201064704.

The previous prime is 31002121001321. The next prime is 31002121001381. The reversal of 31002121001330 is 3310012120013.

It can be written as a sum of positive squares in 8 ways, for example, as 23489308616929 + 7512812384401 = 4846577^2 + 2740951^2 .

It is a super-2 number, since 2×31002121001330² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31002121001299 and 31002121001308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137872952 + ... + 138097628.

Almost surely, 2^{31002121001330} is an apocalyptic number.

31002121001330 is a deficient number, since it is larger than the sum of its proper divisors (24944119166206).

31002121001330 is a wasteful number, since it uses less digits than its factorization.

31002121001330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259838.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31002121001330 its reverse (3310012120013), we get a palindrome (34312133121343).

The spelling of 31002121001330 in words is "thirty-one trillion, two billion, one hundred twenty-one million, one thousand, three hundred thirty".