140972831 has 2 divisors, whose sum is σ = 140972832. Its totient is φ = 140972830.

The previous prime is 140972813. The next prime is 140972833. The reversal of 140972831 is 138279041.

140972831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (140972813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140972831 - 2¹⁴ = 140956447 is a prime.

It is a super-2 number, since 2×140972831² = 39746678160309122, which contains 22 as substring.

Together with 140972833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140972791 and 140972800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140972833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70486415 + 70486416.

It is an arithmetic number, because the mean of its divisors is an integer number (70486416).

Almost surely, 2^140972831 is an apocalyptic number.

140972831 is a deficient number, since it is larger than the sum of its proper divisors (1).

140972831 is an equidigital number, since it uses as much as digits as its factorization.

140972831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 140972831 is about 11873.1980106457. The cubic root of 140972831 is about 520.4493539395.

The spelling of 140972831 in words is "one hundred forty million, nine hundred seventy-two thousand, eight hundred thirty-one".