29131393 has 2 divisors, whose sum is σ = 29131394. Its totient is φ = 29131392.

The previous prime is 29131369. The next prime is 29131433. The reversal of 29131393 is 39313192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15233409 + 13897984 = 3903^2 + 3728^2 .

It is a cyclic number.

It is not a de Polignac number, because 29131393 - 2¹³ = 29123201 is a prime.

It is not a weakly prime, because it can be changed into another prime (29131303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14565696 + 14565697.

It is an arithmetic number, because the mean of its divisors is an integer number (14565697).

Almost surely, 2^29131393 is an apocalyptic number.

It is an amenable number.

29131393 is a deficient number, since it is larger than the sum of its proper divisors (1).

29131393 is an equidigital number, since it uses as much as digits as its factorization.

29131393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 31.

The square root of 29131393 is about 5397.3505537439. The cubic root of 29131393 is about 307.6949846257.

It can be divided in two parts, 291 and 31393, that added together give a square (31684 = 178²).

The spelling of 29131393 in words is "twenty-nine million, one hundred thirty-one thousand, three hundred ninety-three".