140954431 has 2 divisors, whose sum is σ = 140954432. Its totient is φ = 140954430.

The previous prime is 140954381. The next prime is 140954449. The reversal of 140954431 is 134459041.

It is a strong prime.

It is an emirp because it is prime and its reverse (134459041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140954431 is a prime.

It is a super-2 number, since 2×140954431² = 39736303237067522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140954393 and 140954402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140994431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70477215 + 70477216.

It is an arithmetic number, because the mean of its divisors is an integer number (70477216).

Almost surely, 2^140954431 is an apocalyptic number.

140954431 is a deficient number, since it is larger than the sum of its proper divisors (1).

140954431 is an equidigital number, since it uses as much as digits as its factorization.

140954431 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 31.

The square root of 140954431 is about 11872.4231309367. The cubic root of 140954431 is about 520.4267096594.

The spelling of 140954431 in words is "one hundred forty million, nine hundred fifty-four thousand, four hundred thirty-one".