1431393497 has 8 divisors (see below), whose sum is σ = 1448231400. Its totient is φ = 1414572544.

The previous prime is 1431393493. The next prime is 1431393511. The reversal of 1431393497 is 7943931341.

It can be written as a sum of positive squares in 4 ways, for example, as 192071881 + 1239321616 = 13859^2 + 35204^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1431393497 - 2² = 1431393493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431393493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261533 + ... + 266949.

It is an arithmetic number, because the mean of its divisors is an integer number (181028925).

Almost surely, 2^1431393497 is an apocalyptic number.

It is an amenable number.

1431393497 is a deficient number, since it is larger than the sum of its proper divisors (16837903).

1431393497 is an equidigital number, since it uses as much as digits as its factorization.

1431393497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475.

The product of its digits is 244944, while the sum is 44.

The square root of 1431393497 is about 37833.7613382545. The cubic root of 1431393497 is about 1126.9890073086.

The spelling of 1431393497 in words is "one billion, four hundred thirty-one million, three hundred ninety-three thousand, four hundred ninety-seven".