1431953491 has 2 divisors, whose sum is σ = 1431953492. Its totient is φ = 1431953490.

The previous prime is 1431953441. The next prime is 1431953507. The reversal of 1431953491 is 1943591341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1431953491 - 2¹⁵ = 1431920723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1431953441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715976745 + 715976746.

It is an arithmetic number, because the mean of its divisors is an integer number (715976746).

Almost surely, 2^1431953491 is an apocalyptic number.

1431953491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431953491 is an equidigital number, since it uses as much as digits as its factorization.

1431953491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 1431953491 is about 37841.1613326018. The cubic root of 1431953491 is about 1127.1359561385.

The spelling of 1431953491 in words is "one billion, four hundred thirty-one million, nine hundred fifty-three thousand, four hundred ninety-one".