13213000756 has 6 divisors (see below), whose sum is σ = 23122751330. Its totient is φ = 6606500376.

The previous prime is 13213000727. The next prime is 13213000807. The reversal of 13213000756 is 65700031231.

13213000756 = T₉₃₈₅₃ + T₉₃₈₅₄ + T₉₃₈₅₅.

It can be written as a sum of positive squares in only one way, i.e., 12335656356 + 877344400 = 111066^2 + 29620^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1651625091 + ... + 1651625098.

Almost surely, 2^13213000756 is an apocalyptic number.

13213000756 is the 93855-th centered triangular number.

It is an amenable number.

13213000756 is a deficient number, since it is larger than the sum of its proper divisors (9909750574).

13213000756 is a wasteful number, since it uses less digits than its factorization.

13213000756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303250193 (or 3303250191 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 13213000756 its reverse (65700031231), we get a palindrome (78913031987).

The spelling of 13213000756 in words is "thirteen billion, two hundred thirteen million, seven hundred fifty-six", and thus it is an aban number.