2311551132 has 192 divisors, whose sum is σ = 6423266304. Its totient is φ = 639221760.

The previous prime is 2311551127. The next prime is 2311551161.

2311551132 is nontrivially palindromic in base 10.

2311551132 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16872568 + ... + 16872704.

It is an arithmetic number, because the mean of its divisors is an integer number (33454512).

Almost surely, 2^2311551132 is an apocalyptic number.

2311551132 is a gapful number since it is divisible by the number (22) 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 2311551132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3211633152).

2311551132 is an abundant number, since it is smaller than the sum of its proper divisors (4111715172).

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

2311551132 is a wasteful number, since it uses less digits than its factorization.

2311551132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 346 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 2311551132 is about 48078.5932822498. The cubic root of 2311551132 is about 1322.2122247432.

It can be divided in two parts, 23115 and 51132, that added together give a palindrome (74247).

The spelling of 2311551132 in words is "two billion, three hundred eleven million, five hundred fifty-one thousand, one hundred thirty-two".