213772342 has 16 divisors (see below), whose sum is σ = 378289152. Its totient is φ = 88661160.

The previous prime is 213772337. The next prime is 213772387. The reversal of 213772342 is 243277312.

It is a super-2 number, since 2×213772342² = 91397228408329928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245848 + ... + 246715.

It is an arithmetic number, because the mean of its divisors is an integer number (23643072).

Almost surely, 2^213772342 is an apocalyptic number.

213772342 is a deficient number, since it is larger than the sum of its proper divisors (164516810).

213772342 is a wasteful number, since it uses less digits than its factorization.

213772342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492603.

The product of its digits is 14112, while the sum is 31.

The square root of 213772342 is about 14620.9555775264. The cubic root of 213772342 is about 597.9302219451.

The spelling of 213772342 in words is "two hundred thirteen million, seven hundred seventy-two thousand, three hundred forty-two".