31331001222130 has 32 divisors (see below), whose sum is σ = 59723413354800. Its totient is φ = 11793183467520.

The previous prime is 31331001222127. The next prime is 31331001222247. The reversal of 31331001222130 is 3122210013313.

It can be written as a sum of positive squares in 8 ways, for example, as 25326791000329 + 6004210221801 = 5032573^2 + 2450349^2 .

It is a super-2 number, since 2×31331001222130² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14760501 + ... + 16749160.

Almost surely, 2^{31331001222130} is an apocalyptic number.

31331001222130 is a deficient number, since it is larger than the sum of its proper divisors (28392412132670).

31331001222130 is a wasteful number, since it uses less digits than its factorization.

31331001222130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31515534.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31331001222130 its reverse (3122210013313), we get a palindrome (34453211235443).

The spelling of 31331001222130 in words is "thirty-one trillion, three hundred thirty-one billion, one million, two hundred twenty-two thousand, one hundred thirty".