1226017631 has 4 divisors (see below), whose sum is σ = 1239793200. Its totient is φ = 1212242064.

The previous prime is 1226017621. The next prime is 1226017643. The reversal of 1226017631 is 1367106221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1226017631 - 2⁶ = 1226017567 is a prime.

It is a super-2 number, since 2×1226017631² = 3006238463045704322, 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 = 1226017594 and 1226017603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226017621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6887651 + ... + 6887828.

It is an arithmetic number, because the mean of its divisors is an integer number (309948300).

Almost surely, 2^1226017631 is an apocalyptic number.

1226017631 is a deficient number, since it is larger than the sum of its proper divisors (13775569).

1226017631 is an equidigital number, since it uses as much as digits as its factorization.

1226017631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13775568.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1226017631 is about 35014.5345678048. The cubic root of 1226017631 is about 1070.2836849348.

The spelling of 1226017631 in words is "one billion, two hundred twenty-six million, seventeen thousand, six hundred thirty-one".