1231450031 has 8 divisors (see below), whose sum is σ = 1411361184. Its totient is φ = 1052536320.

The previous prime is 1231450027. The next prime is 1231450037. The reversal of 1231450031 is 1300541321.

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 1231450031 - 2² = 1231450027 is a prime.

It is a super-2 number, since 2×1231450031² = 3032938357699801922, 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 = 1231449985 and 1231450012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231450037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246710 + ... + 251651.

It is an arithmetic number, because the mean of its divisors is an integer number (176420148).

Almost surely, 2^1231450031 is an apocalyptic number.

1231450031 is a deficient number, since it is larger than the sum of its proper divisors (179911153).

1231450031 is an equidigital number, since it uses as much as digits as its factorization.

1231450031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498721.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1231450031 is about 35092.0223270190. The cubic root of 1231450031 is about 1071.8621404062.

Adding to 1231450031 its reverse (1300541321), we get a palindrome (2531991352).

The spelling of 1231450031 in words is "one billion, two hundred thirty-one million, four hundred fifty thousand, thirty-one".