31302420311 has 2 divisors, whose sum is σ = 31302420312. Its totient is φ = 31302420310.

The previous prime is 31302420299. The next prime is 31302420337. The reversal of 31302420311 is 11302420313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31302420311 - 2¹⁴ = 31302403927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31302420361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651210155 + 15651210156.

It is an arithmetic number, because the mean of its divisors is an integer number (15651210156).

Almost surely, 2^31302420311 is an apocalyptic number.

31302420311 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302420311 is an equidigital number, since it uses as much as digits as its factorization.

31302420311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31302420311 its reverse (11302420313), we get a palindrome (42604840624).

The spelling of 31302420311 in words is "thirty-one billion, three hundred two million, four hundred twenty thousand, three hundred eleven".