73067231381 has 4 divisors (see below), whose sum is σ = 76244067552. Its totient is φ = 69890395212.

The previous prime is 73067231359. The next prime is 73067231389. The reversal of 73067231381 is 18313276037.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73067231381 is a prime.

It is a super-2 number, since 2×73067231381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73067231389) 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, 1588418051 + ... + 1588418096.

It is an arithmetic number, because the mean of its divisors is an integer number (19061016888).

Almost surely, 2^73067231381 is an apocalyptic number.

It is an amenable number.

73067231381 is a deficient number, since it is larger than the sum of its proper divisors (3176836171).

73067231381 is a wasteful number, since it uses less digits than its factorization.

73067231381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176836170.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 73067231381 in words is "seventy-three billion, sixty-seven million, two hundred thirty-one thousand, three hundred eighty-one".