31411042143021 has 10 divisors (see below), whose sum is σ = 46922667892782. Its totient is φ = 20940694761960.

The previous prime is 31411042143007. The next prime is 31411042143029. The reversal of 31411042143021 is 12034124011413.

It is a happy number.

31411042143021 is a `hidden beast` number, since 3 + 1 + 41 + 104 + 214 + 302 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 31060714289796 + 350327853225 = 5573214^2 + 591885^2 .

It is not a de Polignac number, because 31411042143021 - 2²⁶ = 31410975034157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31411042143029) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 193895321790 + ... + 193895321951.

Almost surely, 2^{31411042143021} is an apocalyptic number.

It is an amenable number.

31411042143021 is a deficient number, since it is larger than the sum of its proper divisors (15511625749761).

31411042143021 is an equidigital number, since it uses as much as digits as its factorization.

31411042143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387790643753 (or 387790643744 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 31411042143021 its reverse (12034124011413), we get a palindrome (43445166154434).

The spelling of 31411042143021 in words is "thirty-one trillion, four hundred eleven billion, forty-two million, one hundred forty-three thousand, twenty-one".