1373221131 has 16 divisors (see below), whose sum is σ = 1853913600. Its totient is φ = 904061088.

The previous prime is 1373221103. The next prime is 1373221147. The reversal of 1373221131 is 1311223731.

It is not a de Polignac number, because 1373221131 - 2¹¹ = 1373219083 is a prime.

It is a super-2 number, since 2×1373221131² = 3771472549249838322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1373221931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93550 + ... + 107228.

It is an arithmetic number, because the mean of its divisors is an integer number (115869600).

Almost surely, 2^1373221131 is an apocalyptic number.

1373221131 is a deficient number, since it is larger than the sum of its proper divisors (480692469).

1373221131 is a wasteful number, since it uses less digits than its factorization.

1373221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14098.

The product of its digits is 756, while the sum is 24.

The square root of 1373221131 is about 37056.9984078581. The cubic root of 1373221131 is about 1111.5103026751.

Adding to 1373221131 its reverse (1311223731), we get a palindrome (2684444862).

The spelling of 1373221131 in words is "one billion, three hundred seventy-three million, two hundred twenty-one thousand, one hundred thirty-one".