31412320143 has 4 divisors (see below), whose sum is σ = 41883093528. Its totient is φ = 20941546760.

The previous prime is 31412320117. The next prime is 31412320153. The reversal of 31412320143 is 34102321413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31412320143 - 2⁵ = 31412320111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31412320153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5235386688 + ... + 5235386693.

It is an arithmetic number, because the mean of its divisors is an integer number (10470773382).

Almost surely, 2^31412320143 is an apocalyptic number.

31412320143 is a deficient number, since it is larger than the sum of its proper divisors (10470773385).

31412320143 is a wasteful number, since it uses less digits than its factorization.

31412320143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10470773384.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31412320143 its reverse (34102321413), we get a palindrome (65514641556).

The spelling of 31412320143 in words is "thirty-one billion, four hundred twelve million, three hundred twenty thousand, one hundred forty-three".