2231151240 has 128 divisors (see below), whose sum is σ = 6783160320. Its totient is φ = 587059200.

The previous prime is 2231151239. The next prime is 2231151253. The reversal of 2231151240 is 421511322.

It is a super-3 number, since 3×2231151240³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4282180 + ... + 4282700.

It is an arithmetic number, because the mean of its divisors is an integer number (52993440).

Almost surely, 2^2231151240 is an apocalyptic number.

2231151240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231151240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3391580160).

2231151240 is an abundant number, since it is smaller than the sum of its proper divisors (4552009080).

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

2231151240 is a wasteful number, since it uses less digits than its factorization.

2231151240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2231151240 is about 47235.0636709638. The cubic root of 2231151240 is about 1306.7013408240.

Adding to 2231151240 its reverse (421511322), we get a palindrome (2652662562).

The spelling of 2231151240 in words is "two billion, two hundred thirty-one million, one hundred fifty-one thousand, two hundred forty".