31321400230045 has 4 divisors (see below), whose sum is σ = 37585680276060. Its totient is φ = 25057120184032.

The previous prime is 31321400230013. The next prime is 31321400230061. The reversal of 31321400230045 is 54003200412313.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21171243893284 + 10150156336761 = 4601222^2 + 3185931^2 .

It is a cyclic number.

It is not a de Polignac number, because 31321400230045 - 2⁵ = 31321400230013 is a prime.

It is a super-2 number, since 2×31321400230045² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31321400229995 and 31321400230022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3132140023000 + ... + 3132140023009.

It is an arithmetic number, because the mean of its divisors is an integer number (9396420069015).

Almost surely, 2^{31321400230045} is an apocalyptic number.

It is an amenable number.

31321400230045 is a deficient number, since it is larger than the sum of its proper divisors (6264280046015).

31321400230045 is an equidigital number, since it uses as much as digits as its factorization.

31321400230045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6264280046014.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 31321400230045 its reverse (54003200412313), we get a palindrome (85324600642358).

The spelling of 31321400230045 in words is "thirty-one trillion, three hundred twenty-one billion, four hundred million, two hundred thirty thousand, forty-five".