1312154029 has 2 divisors, whose sum is σ = 1312154030. Its totient is φ = 1312154028.

The previous prime is 1312154009. The next prime is 1312154057. The reversal of 1312154029 is 9204512131.

1312154029 = T₂₉₅₇₅ + T₂₉₅₇₆ + T₂₉₅₇₇.

It is an a-pointer prime, because the next prime (1312154057) can be obtained adding 1312154029 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1207562500 + 104591529 = 34750^2 + 10227^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312154029 - 2²⁷ = 1177936301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312153988 and 1312154006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312154009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656077014 + 656077015.

It is an arithmetic number, because the mean of its divisors is an integer number (656077015).

Almost surely, 2^1312154029 is an apocalyptic number.

1312154029 is the 29577-th centered triangular number.

It is an amenable number.

1312154029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312154029 is an equidigital number, since it uses as much as digits as its factorization.

1312154029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1312154029 is about 36223.6666973403. Note that the first 4 decimals coincide. The cubic root of 1312154029 is about 1094.7835741930.

The spelling of 1312154029 in words is "one billion, three hundred twelve million, one hundred fifty-four thousand, twenty-nine".