2151235344 has 40 divisors (see below), whose sum is σ = 5651557920. Its totient is φ = 704923648.

The previous prime is 2151235291. The next prime is 2151235349. The reversal of 2151235344 is 4435321512.

It is not an unprimeable number, because it can be changed into a prime (2151235349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376977 + ... + 382640.

It is an arithmetic number, because the mean of its divisors is an integer number (141288948).

Almost surely, 2^2151235344 is an apocalyptic number.

2151235344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2151235344 is an abundant number, since it is smaller than the sum of its proper divisors (3500322576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151235344 is a wasteful number, since it uses less digits than its factorization.

2151235344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759687 (or 759681 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 2151235344 is about 46381.4116214675. The cubic root of 2151235344 is about 1290.9100291037.

Adding to 2151235344 its reverse (4435321512), we get a palindrome (6586556856).

The spelling of 2151235344 in words is "two billion, one hundred fifty-one million, two hundred thirty-five thousand, three hundred forty-four".