213402393 has 12 divisors (see below), whose sum is σ = 309066160. Its totient is φ = 141890616.

The previous prime is 213402373. The next prime is 213402457. The reversal of 213402393 is 393204312.

It is a happy number.

It is not a de Polignac number, because 213402393 - 2¹³ = 213394201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213402313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27871 + ... + 34692.

Almost surely, 2^213402393 is an apocalyptic number.

It is an amenable number.

213402393 is a deficient number, since it is larger than the sum of its proper divisors (95663767).

213402393 is a wasteful number, since it uses less digits than its factorization.

213402393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62948 (or 62945 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 213402393 is about 14608.2987715887. The cubic root of 213402393 is about 597.5851018178.

The spelling of 213402393 in words is "two hundred thirteen million, four hundred two thousand, three hundred ninety-three".