1431115491 has 12 divisors (see below), whose sum is σ = 2066226648. Its totient is φ = 880686144.

The previous prime is 1431115481. The next prime is 1431115501. The reversal of 1431115491 is 1945111341.

It is an interprime number because it is at equal distance from previous prime (1431115481) and next prime (1431115501).

It is not a de Polignac number, because 1431115491 - 2¹¹ = 1431113443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1431115421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1410850 + ... + 1411863.

It is an arithmetic number, because the mean of its divisors is an integer number (172185554).

Almost surely, 2^1431115491 is an apocalyptic number.

1431115491 is a deficient number, since it is larger than the sum of its proper divisors (635111157).

1431115491 is a wasteful number, since it uses less digits than its factorization.

1431115491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822742 (or 2822729 counting only the distinct ones).

The product of its digits is 2160, while the sum is 30.

The square root of 1431115491 is about 37830.0871133018. The cubic root of 1431115491 is about 1126.9160411180.

The spelling of 1431115491 in words is "one billion, four hundred thirty-one million, one hundred fifteen thousand, four hundred ninety-one".