1234117631 has 4 divisors (see below), whose sum is σ = 1234918992. Its totient is φ = 1233316272.

The previous prime is 1234117627. The next prime is 1234117637. The reversal of 1234117631 is 1367114321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1367114321 = 563 ⋅2428267.

It is a cyclic number.

It is not a de Polignac number, because 1234117631 - 2² = 1234117627 is a prime.

It is a super-2 number, since 2×1234117631² = 3046092654290104322, 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 = 1234117594 and 1234117603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234117637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398366 + ... + 401451.

It is an arithmetic number, because the mean of its divisors is an integer number (308729748).

Almost surely, 2^1234117631 is an apocalyptic number.

1234117631 is a deficient number, since it is larger than the sum of its proper divisors (801361).

1234117631 is an equidigital number, since it uses as much as digits as its factorization.

1234117631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801360.

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

The square root of 1234117631 is about 35130.0104042114. The cubic root of 1234117631 is about 1072.6355476970.

The spelling of 1234117631 in words is "one billion, two hundred thirty-four million, one hundred seventeen thousand, six hundred thirty-one".