401572723 has 2 divisors, whose sum is σ = 401572724. Its totient is φ = 401572722.

The previous prime is 401572687. The next prime is 401572751. The reversal of 401572723 is 327275104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401572723 is a prime.

It is a super-2 number, since 2×401572723² = 322521303715269458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401572753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200786361 + 200786362.

It is an arithmetic number, because the mean of its divisors is an integer number (200786362).

Almost surely, 2^401572723 is an apocalyptic number.

401572723 is a deficient number, since it is larger than the sum of its proper divisors (1).

401572723 is an equidigital number, since it uses as much as digits as its factorization.

401572723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 401572723 is about 20039.2795030161. The cubic root of 401572723 is about 737.7706970671.

The spelling of 401572723 in words is "four hundred one million, five hundred seventy-two thousand, seven hundred twenty-three".