2531641020 has 96 divisors (see below), whose sum is σ = 7552113408. Its totient is φ = 631452672.

The previous prime is 2531641019. The next prime is 2531641033. The reversal of 2531641020 is 201461352.

It is a congruent number.

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, 158647 + ... + 173873.

It is an arithmetic number, because the mean of its divisors is an integer number (78667848).

Almost surely, 2^2531641020 is an apocalyptic number.

2531641020 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 2531641020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3776056704).

2531641020 is an abundant number, since it is smaller than the sum of its proper divisors (5020472388).

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

2531641020 is a wasteful number, since it uses less digits than its factorization.

2531641020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15419 (or 15417 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2531641020 is about 50315.4153316854. The cubic root of 2531641020 is about 1362.9106168622.

The spelling of 2531641020 in words is "two billion, five hundred thirty-one million, six hundred forty-one thousand, twenty".