140430431 has 2 divisors, whose sum is σ = 140430432. Its totient is φ = 140430430.

The previous prime is 140430401. The next prime is 140430457. The reversal of 140430431 is 134034041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140430431 - 2¹⁰ = 140429407 is a prime.

It is a super-2 number, since 2×140430431² = 39441411901691522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140430401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70215215 + 70215216.

It is an arithmetic number, because the mean of its divisors is an integer number (70215216).

Almost surely, 2^140430431 is an apocalyptic number.

140430431 is a deficient number, since it is larger than the sum of its proper divisors (1).

140430431 is an equidigital number, since it uses as much as digits as its factorization.

140430431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 140430431 is about 11850.3346366252. The cubic root of 140430431 is about 519.7810110933.

Adding to 140430431 its reverse (134034041), we get a palindrome (274464472).

The spelling of 140430431 in words is "one hundred forty million, four hundred thirty thousand, four hundred thirty-one".