31314540143 has 2 divisors, whose sum is σ = 31314540144. Its totient is φ = 31314540142.

The previous prime is 31314540097. The next prime is 31314540223. The reversal of 31314540143 is 34104541313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31314540143 - 2⁸ = 31314539887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31314540643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15657270071 + 15657270072.

It is an arithmetic number, because the mean of its divisors is an integer number (15657270072).

Almost surely, 2^31314540143 is an apocalyptic number.

31314540143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31314540143 is an equidigital number, since it uses as much as digits as its factorization.

31314540143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 31314540143 in words is "thirty-one billion, three hundred fourteen million, five hundred forty thousand, one hundred forty-three".