1373723047 has 12 divisors (see below), whose sum is σ = 1512874800. Its totient is φ = 1244830752.

The previous prime is 1373723027. The next prime is 1373723077. The reversal of 1373723047 is 7403273731.

It is not a de Polignac number, because 1373723047 - 2⁷ = 1373722919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1373722997 and 1373723015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373723017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74422 + ... + 91027.

It is an arithmetic number, because the mean of its divisors is an integer number (126072900).

Almost surely, 2^1373723047 is an apocalyptic number.

1373723047 is a deficient number, since it is larger than the sum of its proper divisors (139151753).

1373723047 is a wasteful number, since it uses less digits than its factorization.

1373723047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165510 (or 165491 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 37.

The square root of 1373723047 is about 37063.7700052221. The cubic root of 1373723047 is about 1111.6457061768.

Adding to 1373723047 its reverse (7403273731), we get a palindrome (8776996778).

The spelling of 1373723047 in words is "one billion, three hundred seventy-three million, seven hundred twenty-three thousand, forty-seven".