212348451 has 16 divisors (see below), whose sum is σ = 324194048. Its totient is φ = 121111200.

The previous prime is 212348449. The next prime is 212348453. The reversal of 212348451 is 154843212.

It is an interprime number because it is at equal distance from previous prime (212348449) and next prime (212348453).

It is not a de Polignac number, because 212348451 - 2¹ = 212348449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212348453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2016 + ... + 20706.

It is an arithmetic number, because the mean of its divisors is an integer number (20262128).

Almost surely, 2^212348451 is an apocalyptic number.

212348451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212348451 is a deficient number, since it is larger than the sum of its proper divisors (111845597).

212348451 is a wasteful number, since it uses less digits than its factorization.

212348451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19242.

The product of its digits is 7680, while the sum is 30.

The square root of 212348451 is about 14572.1807221843. The cubic root of 212348451 is about 596.5997024745.

The spelling of 212348451 in words is "two hundred twelve million, three hundred forty-eight thousand, four hundred fifty-one".