1231049383949 has 8 divisors (see below), whose sum is σ = 1534814816448. Its totient is φ = 959259260160.

The previous prime is 1231049383937. The next prime is 1231049383961. The reversal of 1231049383949 is 9493839401321.

It is an interprime number because it is at equal distance from previous prime (1231049383937) and next prime (1231049383961).

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 1231049383949 - 2²⁸ = 1230780948493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231049383894 and 1231049383903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231049383349) 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, 7993827092 + ... + 7993827245.

It is an arithmetic number, because the mean of its divisors is an integer number (191851852056).

Almost surely, 2^{1231049383949} is an apocalyptic number.

It is an amenable number.

1231049383949 is a deficient number, since it is larger than the sum of its proper divisors (303765432499).

1231049383949 is a wasteful number, since it uses less digits than its factorization.

1231049383949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15987654355.

The product of its (nonzero) digits is 5038848, while the sum is 56.

The spelling of 1231049383949 in words is "one trillion, two hundred thirty-one billion, forty-nine million, three hundred eighty-three thousand, nine hundred forty-nine".