31032021322061 has 2 divisors, whose sum is σ = 31032021322062. Its totient is φ = 31032021322060.

The previous prime is 31032021322039. The next prime is 31032021322087. The reversal of 31032021322061 is 16022312023013.

It is a happy number.

It is an a-pointer prime, because the next prime (31032021322087) can be obtained adding 31032021322061 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28519498333225 + 2512522988836 = 5340365^2 + 1585094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31032021322061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31032021322061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31032021322091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15516010661030 + 15516010661031.

It is an arithmetic number, because the mean of its divisors is an integer number (15516010661031).

Almost surely, 2^{31032021322061} is an apocalyptic number.

It is an amenable number.

31032021322061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31032021322061 is an equidigital number, since it uses as much as digits as its factorization.

31032021322061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31032021322061 its reverse (16022312023013), we get a palindrome (47054333345074).

The spelling of 31032021322061 in words is "thirty-one trillion, thirty-two billion, twenty-one million, three hundred twenty-two thousand, sixty-one".