1361131522 has 4 divisors (see below), whose sum is σ = 2041697286. Its totient is φ = 680565760.

The previous prime is 1361131493. The next prime is 1361131523. The reversal of 1361131522 is 2251311631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 987907761 + 373223761 = 31431^2 + 19319^2 .

It is not an unprimeable number, because it can be changed into a prime (1361131523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340282879 + ... + 340282882.

Almost surely, 2^1361131522 is an apocalyptic number.

1361131522 is a deficient number, since it is larger than the sum of its proper divisors (680565764).

1361131522 is an equidigital number, since it uses as much as digits as its factorization.

1361131522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680565763.

The product of its digits is 1080, while the sum is 25.

The square root of 1361131522 is about 36893.5159885853. The cubic root of 1361131522 is about 1108.2388330958.

The spelling of 1361131522 in words is "one billion, three hundred sixty-one million, one hundred thirty-one thousand, five hundred twenty-two".