31242003421311 has 24 divisors (see below), whose sum is σ = 45762286358880. Its totient is φ = 20535158451456.

The previous prime is 31242003421283. The next prime is 31242003421319. The reversal of 31242003421311 is 11312430024213.

31242003421311 is a `hidden beast` number, since 3 + 1 + 2 + 4 + 2 + 0 + 0 + 342 + 1 + 311 = 666.

It is not a de Polignac number, because 31242003421311 - 2³⁹ = 30692247607423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31242003421319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6919491 + ... + 10505396.

It is an arithmetic number, because the mean of its divisors is an integer number (1906761931620).

Almost surely, 2^{31242003421311} is an apocalyptic number.

31242003421311 is a deficient number, since it is larger than the sum of its proper divisors (14520282937569).

31242003421311 is a wasteful number, since it uses less digits than its factorization.

31242003421311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17427695 (or 17427692 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 31242003421311 its reverse (11312430024213), we get a palindrome (42554433445524).

The spelling of 31242003421311 in words is "thirty-one trillion, two hundred forty-two billion, three million, four hundred twenty-one thousand, three hundred eleven".