69431723001 has 9 divisors (see below), whose sum is σ = 100291408399. Its totient is φ = 46287288336.

The previous prime is 69431722993. The next prime is 69431723029. The reversal of 69431723001 is 10032713496.

The square root of 69431723001 is 263499.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 47104191225 + 22327531776 = 217035^2 + 149424^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 69431723001 - 2³ = 69431722993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69431728001) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 746581 + ... + 834413.

Almost surely, 2^69431723001 is an apocalyptic number.

69431723001 is the 263499-th square number.

69431723001 is the 131750-th centered octagonal number.

It is an amenable number.

69431723001 is a deficient number, since it is larger than the sum of its proper divisors (30859685398).

69431723001 is an frugal number, since it uses more digits than its factorization.

69431723001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175672 (or 87836 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

Multiplying 69431723001 by its sum of digits (36), we get a square (2499542028036 = 1580994²).

The spelling of 69431723001 in words is "sixty-nine billion, four hundred thirty-one million, seven hundred twenty-three thousand, one".