1225423031 has 16 divisors (see below), whose sum is σ = 1479970560. Its totient is φ = 991180800.

The previous prime is 1225422997. The next prime is 1225423051. The reversal of 1225423031 is 1303245221.

It is a cyclic number.

It is not a de Polignac number, because 1225423031 - 2⁶ = 1225422967 is a prime.

It is a super-2 number, since 2×1225423031² = 3003323209810453922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225422988 and 1225423006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225423051) 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, 16256 + ... + 52106.

It is an arithmetic number, because the mean of its divisors is an integer number (92498160).

Almost surely, 2^1225423031 is an apocalyptic number.

1225423031 is a deficient number, since it is larger than the sum of its proper divisors (254547529).

1225423031 is a wasteful number, since it uses less digits than its factorization.

1225423031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36134.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1225423031 is about 35006.0427783547. The cubic root of 1225423031 is about 1070.1106331584.

Adding to 1225423031 its reverse (1303245221), we get a palindrome (2528668252).

The spelling of 1225423031 in words is "one billion, two hundred twenty-five million, four hundred twenty-three thousand, thirty-one".