31212014055493 has 2 divisors, whose sum is σ = 31212014055494. Its totient is φ = 31212014055492.

The previous prime is 31212014055463. The next prime is 31212014055503. The reversal of 31212014055493 is 39455041021213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22106001696804 + 9106012358689 = 4701702^2 + 3017617^2 .

It is a cyclic number.

It is not a de Polignac number, because 31212014055493 - 2²¹ = 31212011958341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212014055463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606007027746 + 15606007027747.

It is an arithmetic number, because the mean of its divisors is an integer number (15606007027747).

Almost surely, 2^{31212014055493} is an apocalyptic number.

It is an amenable number.

31212014055493 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212014055493 is an equidigital number, since it uses as much as digits as its factorization.

31212014055493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 31212014055493 in words is "thirty-one trillion, two hundred twelve billion, fourteen million, fifty-five thousand, four hundred ninety-three".