31144500002141 has 4 divisors (see below), whose sum is σ = 32783684212800. Its totient is φ = 29505315791484.

The previous prime is 31144500002131. The next prime is 31144500002153. The reversal of 31144500002141 is 14120000544113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31144500002141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31144500002141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144500002131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819592105301 + ... + 819592105338.

It is an arithmetic number, because the mean of its divisors is an integer number (8195921053200).

Almost surely, 2^{31144500002141} is an apocalyptic number.

It is an amenable number.

31144500002141 is a deficient number, since it is larger than the sum of its proper divisors (1639184210659).

31144500002141 is a wasteful number, since it uses less digits than its factorization.

31144500002141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639184210658.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 31144500002141 its reverse (14120000544113), we get a palindrome (45264500546254).

The spelling of 31144500002141 in words is "thirty-one trillion, one hundred forty-four billion, five hundred million, two thousand, one hundred forty-one".