1234125731 has 2 divisors, whose sum is σ = 1234125732. Its totient is φ = 1234125730.

The previous prime is 1234125719. The next prime is 1234125733. The reversal of 1234125731 is 1375214321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1234125731 - 2¹⁴ = 1234109347 is a prime.

It is a super-2 number, since 2×1234125731² = 3046132639832568722, which contains 22 as substring.

Together with 1234125733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1234125694 and 1234125703.

It is not a weakly prime, because it can be changed into another prime (1234125733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617062865 + 617062866.

It is an arithmetic number, because the mean of its divisors is an integer number (617062866).

Almost surely, 2^1234125731 is an apocalyptic number.

1234125731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234125731 is an equidigital number, since it uses as much as digits as its factorization.

1234125731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 1234125731 is about 35130.1256900683. The cubic root of 1234125731 is about 1072.6378944017.

The spelling of 1234125731 in words is "one billion, two hundred thirty-four million, one hundred twenty-five thousand, seven hundred thirty-one".