213457377 has 24 divisors (see below), whose sum is σ = 336033696. Its totient is φ = 120149568.

The previous prime is 213457369. The next prime is 213457379. The reversal of 213457377 is 773754312.

213457377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213457377 - 2³ = 213457369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213457379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 988 + ... + 20685.

It is an arithmetic number, because the mean of its divisors is an integer number (14001404).

Almost surely, 2^213457377 is an apocalyptic number.

It is an amenable number.

213457377 is a deficient number, since it is larger than the sum of its proper divisors (122576319).

213457377 is a wasteful number, since it uses less digits than its factorization.

213457377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21757 (or 21750 counting only the distinct ones).

The product of its digits is 123480, while the sum is 39.

The square root of 213457377 is about 14610.1805943664. The cubic root of 213457377 is about 597.6364208263.

The spelling of 213457377 in words is "two hundred thirteen million, four hundred fifty-seven thousand, three hundred seventy-seven".