1223431612949 has 24 divisors (see below), whose sum is σ = 1544718809088. Its totient is φ = 960367816800.

The previous prime is 1223431612943. The next prime is 1223431613003. The reversal of 1223431612949 is 9492161343221.

It is a happy number.

It is not a de Polignac number, because 1223431612949 - 2⁴ = 1223431612933 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223431612943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7480577 + ... + 7642374.

It is an arithmetic number, because the mean of its divisors is an integer number (64363283712).

Almost surely, 2^{1223431612949} is an apocalyptic number.

It is an amenable number.

1223431612949 is a deficient number, since it is larger than the sum of its proper divisors (321287196139).

1223431612949 is a wasteful number, since it uses less digits than its factorization.

1223431612949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15123105 (or 15123098 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The spelling of 1223431612949 in words is "one trillion, two hundred twenty-three billion, four hundred thirty-one million, six hundred twelve thousand, nine hundred forty-nine".