31030111201000 has 64 divisors (see below), whose sum is σ = 72927536994000. Its totient is φ = 12357843321600.

The previous prime is 31030111200917. The next prime is 31030111201009. The reversal of 31030111201000 is 10211103013.

It can be written as a sum of positive squares in 8 ways, for example, as 7048738262916 + 23981372938084 = 2654946^2 + 4897078^2 .

It is a super-2 number, since 2×31030111201000² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31030111201009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67522335 + ... + 67980334.

Almost surely, 2^{31030111201000} is an apocalyptic number.

It is an amenable number.

31030111201000 is an abundant number, since it is smaller than the sum of its proper divisors (41897425793000).

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

31030111201000 is a wasteful number, since it uses less digits than its factorization.

31030111201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135502919 (or 135502905 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31030111201000 its reverse (10211103013), we get a palindrome (31040322304013).

The spelling of 31030111201000 in words is "thirty-one trillion, thirty billion, one hundred eleven million, two hundred one thousand".