73513313 has 4 divisors (see below), whose sum is σ = 76709568. Its totient is φ = 70317060.

The previous prime is 73513301. The next prime is 73513333. The reversal of 73513313 is 31331537.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31331537 = 59 ⋅531043.

It is a cyclic number.

It is not a de Polignac number, because 73513313 - 2⁶ = 73513249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73513333) 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, 1598093 + ... + 1598138.

It is an arithmetic number, because the mean of its divisors is an integer number (19177392).

Almost surely, 2^73513313 is an apocalyptic number.

It is an amenable number.

73513313 is a deficient number, since it is larger than the sum of its proper divisors (3196255).

73513313 is a wasteful number, since it uses less digits than its factorization.

73513313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196254.

The product of its digits is 2835, while the sum is 26.

The square root of 73513313 is about 8573.9904945130. The cubic root of 73513313 is about 418.9112257173.

The spelling of 73513313 in words is "seventy-three million, five hundred thirteen thousand, three hundred thirteen".