1149631031 has 4 divisors (see below), whose sum is σ = 1150341864. Its totient is φ = 1148920200.

The previous prime is 1149631009. The next prime is 1149631039. The reversal of 1149631031 is 1301369411.

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 1149631031 - 2²⁶ = 1082522167 is a prime.

It is a super-2 number, since 2×1149631031² = 2643303014876245922, 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 = 1149630985 and 1149631003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149631039) 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, 352985 + ... + 356226.

It is an arithmetic number, because the mean of its divisors is an integer number (287585466).

Almost surely, 2^1149631031 is an apocalyptic number.

1149631031 is a deficient number, since it is larger than the sum of its proper divisors (710833).

1149631031 is an equidigital number, since it uses as much as digits as its factorization.

1149631031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710832.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1149631031 is about 33906.2093280862. The cubic root of 1149631031 is about 1047.5774933698.

The spelling of 1149631031 in words is "one billion, one hundred forty-nine million, six hundred thirty-one thousand, thirty-one".