1146631431 has 8 divisors (see below), whose sum is σ = 1667827584. Its totient is φ = 694928120.

The previous prime is 1146631427. The next prime is 1146631439. The reversal of 1146631431 is 1341366411.

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 1146631431 - 2² = 1146631427 is a prime.

It is a super-2 number, since 2×1146631431² = 2629527277114215522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146631439) 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, 17373171 + ... + 17373236.

It is an arithmetic number, because the mean of its divisors is an integer number (208478448).

Almost surely, 2^1146631431 is an apocalyptic number.

1146631431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1146631431 is a deficient number, since it is larger than the sum of its proper divisors (521196153).

1146631431 is a wasteful number, since it uses less digits than its factorization.

1146631431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34746421.

The product of its digits is 5184, while the sum is 30.

The square root of 1146631431 is about 33861.9466510713. The cubic root of 1146631431 is about 1046.6655919882.

Adding to 1146631431 its reverse (1341366411), we get a palindrome (2487997842).

The spelling of 1146631431 in words is "one billion, one hundred forty-six million, six hundred thirty-one thousand, four hundred thirty-one".