31450143512387 has 2 divisors, whose sum is σ = 31450143512388. Its totient is φ = 31450143512386.

The previous prime is 31450143512377. The next prime is 31450143512407. The reversal of 31450143512387 is 78321534105413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31450143512387 - 2²⁰ = 31450142463811 is a prime.

It is a super-2 number, since 2×31450143512387² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31450143512377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15725071756193 + 15725071756194.

It is an arithmetic number, because the mean of its divisors is an integer number (15725071756194).

Almost surely, 2^{31450143512387} is an apocalyptic number.

31450143512387 is a deficient number, since it is larger than the sum of its proper divisors (1).

31450143512387 is an equidigital number, since it uses as much as digits as its factorization.

31450143512387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 31450143512387 in words is "thirty-one trillion, four hundred fifty billion, one hundred forty-three million, five hundred twelve thousand, three hundred eighty-seven".