1311402434 has 8 divisors (see below), whose sum is σ = 1970378508. Its totient is φ = 654609600.

The previous prime is 1311402353. The next prime is 1311402437. The reversal of 1311402434 is 4342041131.

It can be written as a sum of positive squares in 2 ways, for example, as 1229554225 + 81848209 = 35065^2 + 9047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1311402434² = 3439552687802248712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311402437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544307 + ... + 546710.

Almost surely, 2^1311402434 is an apocalyptic number.

1311402434 is a deficient number, since it is larger than the sum of its proper divisors (658976074).

1311402434 is a wasteful number, since it uses less digits than its factorization.

1311402434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091620.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1311402434 is about 36213.2908474223. The cubic root of 1311402434 is about 1094.5745054919.

Adding to 1311402434 its reverse (4342041131), we get a palindrome (5653443565).

The spelling of 1311402434 in words is "one billion, three hundred eleven million, four hundred two thousand, four hundred thirty-four".