213401045 has 48 divisors (see below), whose sum is σ = 310670976. Its totient is φ = 139708800.

The previous prime is 213401039. The next prime is 213401059. The reversal of 213401045 is 540104312.

It is not a de Polignac number, because 213401045 - 2¹² = 213396949 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337880 + ... + 338510.

It is an arithmetic number, because the mean of its divisors is an integer number (6472312).

Almost surely, 2^213401045 is an apocalyptic number.

It is an amenable number.

213401045 is a deficient number, since it is larger than the sum of its proper divisors (97269931).

213401045 is a wasteful number, since it uses less digits than its factorization.

213401045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 213401045 is about 14608.2526333576. The cubic root of 213401045 is about 597.5838435589.

Adding to 213401045 its reverse (540104312), we get a palindrome (753505357).

The spelling of 213401045 in words is "two hundred thirteen million, four hundred one thousand, forty-five".