1149431 has 4 divisors (see below), whose sum is σ = 1152264. Its totient is φ = 1146600.

The previous prime is 1149427. The next prime is 1149457. The reversal of 1149431 is 1349411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1149431 - 2² = 1149427 is a prime.

It is a super-2 number, since 2×1149431² = 2642383247522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1149397 and 1149406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680 + ... + 1661.

It is an arithmetic number, because the mean of its divisors is an integer number (288066).

2^1149431 is an apocalyptic number.

1149431 is a deficient number, since it is larger than the sum of its proper divisors (2833).

1149431 is an equidigital number, since it uses as much as digits as its factorization.

1149431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832.

The product of its digits is 432, while the sum is 23.

The square root of 1149431 is about 1072.1151990341. The cubic root of 1149431 is about 104.7516731809.

The spelling of 1149431 in words is "one million, one hundred forty-nine thousand, four hundred thirty-one".