20120351 has 4 divisors (see below), whose sum is σ = 20130000. Its totient is φ = 20110704.

The previous prime is 20120323. The next prime is 20120363. The reversal of 20120351 is 15302102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251 + ... + 6348.

It is an arithmetic number, because the mean of its divisors is an integer number (5032500).

Almost surely, 2^20120351 is an apocalyptic number.

20120351 is a deficient number, since it is larger than the sum of its proper divisors (9649).

20120351 is an equidigital number, since it uses as much as digits as its factorization.

20120351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9648.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 20120351 is about 4485.5714240217. The cubic root of 20120351 is about 271.9851446255.

Adding to 20120351 its reverse (15302102), we get a palindrome (35422453).

The spelling of 20120351 in words is "twenty million, one hundred twenty thousand, three hundred fifty-one".