1312051722 has 32 divisors (see below), whose sum is σ = 2659694400. Its totient is φ = 431458560.

The previous prime is 1312051691. The next prime is 1312051777. The reversal of 1312051722 is 2271502131.

It is a junction number, because it is equal to n+sod(n) for n = 1312051692 and 1312051701.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131154 + ... + 140802.

It is an arithmetic number, because the mean of its divisors is an integer number (83115450).

Almost surely, 2^1312051722 is an apocalyptic number.

1312051722 is an abundant number, since it is smaller than the sum of its proper divisors (1347642678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312051722 is a wasteful number, since it uses less digits than its factorization.

1312051722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9958.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1312051722 is about 36222.2545129372. The cubic root of 1312051722 is about 1094.7551204872.

Adding to 1312051722 its reverse (2271502131), we get a palindrome (3583553853).

The spelling of 1312051722 in words is "one billion, three hundred twelve million, fifty-one thousand, seven hundred twenty-two".