31622421307 has 2 divisors, whose sum is σ = 31622421308. Its totient is φ = 31622421306.

The previous prime is 31622421199. The next prime is 31622421319. The reversal of 31622421307 is 70312422613.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31622421307 - 2¹¹ = 31622419259 is a prime.

It is not a weakly prime, because it can be changed into another prime (31622431307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15811210653 + 15811210654.

It is an arithmetic number, because the mean of its divisors is an integer number (15811210654).

Almost surely, 2^31622421307 is an apocalyptic number.

31622421307 is a deficient number, since it is larger than the sum of its proper divisors (1).

31622421307 is an equidigital number, since it uses as much as digits as its factorization.

31622421307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

It can be divided in two parts, 31622 and 421307, that added together give a square (452929 = 673²).

The spelling of 31622421307 in words is "thirty-one billion, six hundred twenty-two million, four hundred twenty-one thousand, three hundred seven".