1031531101012 has 12 divisors (see below), whose sum is σ = 1805503613620. Its totient is φ = 515672925696.

The previous prime is 1031531100983. The next prime is 1031531101021. The reversal of 1031531101012 is 2101011351301.

It can be written as a sum of positive squares in 2 ways, for example, as 77928072336 + 953603028676 = 279156^2 + 976526^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23131143 + ... + 23175694.

Almost surely, 2^{1031531101012} is an apocalyptic number.

It is an amenable number.

1031531101012 is a deficient number, since it is larger than the sum of its proper divisors (773972512608).

1031531101012 is a wasteful number, since it uses less digits than its factorization.

1031531101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46312410 (or 46312408 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 19.

Adding to 1031531101012 its reverse (2101011351301), we get a palindrome (3132542452313).

The spelling of 1031531101012 in words is "one trillion, thirty-one billion, five hundred thirty-one million, one hundred one thousand, twelve".