321234157 has 2 divisors, whose sum is σ = 321234158. Its totient is φ = 321234156.

The previous prime is 321234127. The next prime is 321234187. The reversal of 321234157 is 751432123.

It is a balanced prime because it is at equal distance from previous prime (321234127) and next prime (321234187).

It can be written as a sum of positive squares in only one way, i.e., 229189321 + 92044836 = 15139^2 + 9594^2 .

It is a cyclic number.

It is not a de Polignac number, because 321234157 - 2⁷ = 321234029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321234107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160617078 + 160617079.

It is an arithmetic number, because the mean of its divisors is an integer number (160617079).

Almost surely, 2^321234157 is an apocalyptic number.

It is an amenable number.

321234157 is a deficient number, since it is larger than the sum of its proper divisors (1).

321234157 is an equidigital number, since it uses as much as digits as its factorization.

321234157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 321234157 is about 17923.0063605412. The cubic root of 321234157 is about 684.8685751379.

The spelling of 321234157 in words is "three hundred twenty-one million, two hundred thirty-four thousand, one hundred fifty-seven".