1351240312 has 8 divisors (see below), whose sum is σ = 2533575600. Its totient is φ = 675620152.

The previous prime is 1351240301. The next prime is 1351240313. The reversal of 1351240312 is 2130421531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351240313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84452512 + ... + 84452527.

It is an arithmetic number, because the mean of its divisors is an integer number (316696950).

Almost surely, 2^1351240312 is an apocalyptic number.

It is an amenable number.

1351240312 is a deficient number, since it is larger than the sum of its proper divisors (1182335288).

1351240312 is a wasteful number, since it uses less digits than its factorization.

1351240312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168905045 (or 168905041 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1351240312 is about 36759.2207752014. The cubic root of 1351240312 is about 1105.5478162460.

Adding to 1351240312 its reverse (2130421531), we get a palindrome (3481661843).

It can be divided in two parts, 13512 and 40312, that added together give a square (53824 = 232²).

The spelling of 1351240312 in words is "one billion, three hundred fifty-one million, two hundred forty thousand, three hundred twelve".