31400013223 has 2 divisors, whose sum is σ = 31400013224. Its totient is φ = 31400013222.

The previous prime is 31400013209. The next prime is 31400013277. The reversal of 31400013223 is 32231000413.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31400013223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31400013223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31400016223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700006611 + 15700006612.

It is an arithmetic number, because the mean of its divisors is an integer number (15700006612).

Almost surely, 2^31400013223 is an apocalyptic number.

31400013223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31400013223 is an equidigital number, since it uses as much as digits as its factorization.

31400013223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31400013223 its reverse (32231000413), we get a palindrome (63631013636).

The spelling of 31400013223 in words is "thirty-one billion, four hundred million, thirteen thousand, two hundred twenty-three".