140418431 has 2 divisors, whose sum is σ = 140418432. Its totient is φ = 140418430.

The previous prime is 140418403. The next prime is 140418451. The reversal of 140418431 is 134814041.

It is a strong prime.

It is an emirp because it is prime and its reverse (134814041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140418431 - 2¹⁴ = 140402047 is a prime.

It is a super-2 number, since 2×140418431² = 39434671529003522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140418431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140418451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70209215 + 70209216.

It is an arithmetic number, because the mean of its divisors is an integer number (70209216).

Almost surely, 2^140418431 is an apocalyptic number.

140418431 is a deficient number, since it is larger than the sum of its proper divisors (1).

140418431 is an equidigital number, since it uses as much as digits as its factorization.

140418431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 140418431 is about 11849.8283109925. The cubic root of 140418431 is about 519.7662053048.

The spelling of 140418431 in words is "one hundred forty million, four hundred eighteen thousand, four hundred thirty-one".