2131504733 has 2 divisors, whose sum is σ = 2131504734. Its totient is φ = 2131504732.

The previous prime is 2131504729. The next prime is 2131504747. The reversal of 2131504733 is 3374051312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1119437764 + 1012066969 = 33458^2 + 31813^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131504733 - 2² = 2131504729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131504696 and 2131504705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131504633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065752366 + 1065752367.

It is an arithmetic number, because the mean of its divisors is an integer number (1065752367).

Almost surely, 2^2131504733 is an apocalyptic number.

It is an amenable number.

2131504733 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131504733 is an equidigital number, since it uses as much as digits as its factorization.

2131504733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 2131504733 is about 46168.2221121845. Note that the first 3 decimals coincide. The cubic root of 2131504733 is about 1286.9512630396.

The spelling of 2131504733 in words is "two billion, one hundred thirty-one million, five hundred four thousand, seven hundred thirty-three".