2351361621 has 16 divisors (see below), whose sum is σ = 3584227328. Its totient is φ = 1343185200.

The previous prime is 2351361601. The next prime is 2351361631. The reversal of 2351361621 is 1261631532.

2351361621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2351361621 - 2¹⁴ = 2351345237 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 (2351361601) 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, 51576 + ... + 85806.

It is an arithmetic number, because the mean of its divisors is an integer number (224014208).

Almost surely, 2^2351361621 is an apocalyptic number.

2351361621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2351361621 is a deficient number, since it is larger than the sum of its proper divisors (1232865707).

2351361621 is a wasteful number, since it uses less digits than its factorization.

2351361621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37512.

The product of its digits is 6480, while the sum is 30.

The square root of 2351361621 is about 48490.8405887132. The cubic root of 2351361621 is about 1329.7596228291.

The spelling of 2351361621 in words is "two billion, three hundred fifty-one million, three hundred sixty-one thousand, six hundred twenty-one".