1312154667 has 16 divisors (see below), whose sum is σ = 1954800000. Its totient is φ = 869879592.

The previous prime is 1312154653. The next prime is 1312154681. The reversal of 1312154667 is 7664512131.

1312154667 is a `hidden beast` number, since 1 + 31 + 21 + 546 + 67 = 666.

1312154667 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1312154653) and next prime (1312154681).

It is not a de Polignac number, because 1312154667 - 2¹² = 1312150571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312155667) 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, 130917 + ... + 140582.

It is an arithmetic number, because the mean of its divisors is an integer number (122175000).

Almost surely, 2^1312154667 is an apocalyptic number.

1312154667 is a deficient number, since it is larger than the sum of its proper divisors (642645333).

1312154667 is a wasteful number, since it uses less digits than its factorization.

1312154667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271687 (or 271681 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 1312154667 is about 36223.6755037365. The cubic root of 1312154667 is about 1094.7837516294.

Adding to 1312154667 its reverse (7664512131), we get a palindrome (8976666798).

The spelling of 1312154667 in words is "one billion, three hundred twelve million, one hundred fifty-four thousand, six hundred sixty-seven".