7421231313 has 16 divisors (see below), whose sum is σ = 11472435840. Its totient is φ = 4732378992.

The previous prime is 7421231297. The next prime is 7421231327. The reversal of 7421231313 is 3131321247.

It is a happy number.

7421231313 is a `hidden beast` number, since 7 + 421 + 231 + 3 + 1 + 3 = 666.

It is not a de Polignac number, because 7421231313 - 2⁴ = 7421231297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7421231393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5974606 + ... + 5975847.

It is an arithmetic number, because the mean of its divisors is an integer number (717027240).

Almost surely, 2^7421231313 is an apocalyptic number.

It is an amenable number.

7421231313 is a deficient number, since it is larger than the sum of its proper divisors (4051204527).

7421231313 is a wasteful number, since it uses less digits than its factorization.

7421231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11950485 (or 11950479 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 7421231313 is about 86146.5687825116. The cubic root of 7421231313 is about 1950.5570455905.

The spelling of 7421231313 in words is "seven billion, four hundred twenty-one million, two hundred thirty-one thousand, three hundred thirteen".