31352722489 has 9 divisors (see below), whose sum is σ = 34464224431. Its totient is φ = 28500704320.

The previous prime is 31352722459. The next prime is 31352722507. The reversal of 31352722489 is 98422725313.

The square root of 31352722489 is 177067.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 18083525625 + 13269196864 = 134475^2 + 115192^2 .

It is not a de Polignac number, because 31352722489 - 2¹³ = 31352714297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31352722409) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1939689 + ... + 1955785.

Almost surely, 2^31352722489 is an apocalyptic number.

31352722489 is the 177067-th square number.

31352722489 is the 88534-th centered octagonal number.

It is an amenable number.

31352722489 is a deficient number, since it is larger than the sum of its proper divisors (3111501942).

31352722489 is an frugal number, since it uses more digits than its factorization.

31352722489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32216 (or 16108 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The spelling of 31352722489 in words is "thirty-one billion, three hundred fifty-two million, seven hundred twenty-two thousand, four hundred eighty-nine".