142831051931 has 4 divisors (see below), whose sum is σ = 144245220864. Its totient is φ = 141416883000.

The previous prime is 142831051919. The next prime is 142831051943. The reversal of 142831051931 is 139150138241.

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

It is an interprime number because it is at equal distance from previous prime (142831051919) and next prime (142831051943).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142831051931 is a prime.

It is a super-2 number, since 2×142831051931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142831051631) 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, 707084315 + ... + 707084516.

It is an arithmetic number, because the mean of its divisors is an integer number (36061305216).

Almost surely, 2^142831051931 is an apocalyptic number.

142831051931 is a deficient number, since it is larger than the sum of its proper divisors (1414168933).

142831051931 is a wasteful number, since it uses less digits than its factorization.

142831051931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414168932.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 142831051931 in words is "one hundred forty-two billion, eight hundred thirty-one million, fifty-one thousand, nine hundred thirty-one".