31030211121200 has 60 divisors (see below), whose sum is σ = 74550618077088. Its totient is φ = 12411995232000.

The previous prime is 31030211121187. The next prime is 31030211121223. The reversal of 31030211121200 is 212111203013.

It is a super-2 number, since 2×31030211121200² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106394774 + ... + 106686026.

Almost surely, 2^{31030211121200} is an apocalyptic number.

It is an amenable number.

31030211121200 is an abundant number, since it is smaller than the sum of its proper divisors (43520406955888).

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

31030211121200 is a wasteful number, since it uses less digits than its factorization.

31030211121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557622 (or 557611 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31030211121200 its reverse (212111203013), we get a palindrome (31242322324213).

The spelling of 31030211121200 in words is "thirty-one trillion, thirty billion, two hundred eleven million, one hundred twenty-one thousand, two hundred".