397135623023 has 4 divisors (see below), whose sum is σ = 397177581960. Its totient is φ = 397093664088.

The previous prime is 397135622981. The next prime is 397135623067. The reversal of 397135623023 is 320326531793.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 397135623023 - 2¹⁰ = 397135621999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397135623223) 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, 20965268 + ... + 20984201.

It is an arithmetic number, because the mean of its divisors is an integer number (99294395490).

Almost surely, 2^397135623023 is an apocalyptic number.

397135623023 is a deficient number, since it is larger than the sum of its proper divisors (41958937).

397135623023 is an equidigital number, since it uses as much as digits as its factorization.

397135623023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41958936.

The product of its (nonzero) digits is 612360, while the sum is 44.

The spelling of 397135623023 in words is "three hundred ninety-seven billion, one hundred thirty-five million, six hundred twenty-three thousand, twenty-three".