1631201103 has 24 divisors (see below), whose sum is σ = 2694121248. Its totient is φ = 931649472.

The previous prime is 1631201083. The next prime is 1631201107. The reversal of 1631201103 is 3011021361.

1631201103 is a `hidden beast` number, since 1 + 631 + 20 + 1 + 10 + 3 = 666.

1631201103 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1631201103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631201107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150825 + ... + 161277.

It is an arithmetic number, because the mean of its divisors is an integer number (112255052).

Almost surely, 2^1631201103 is an apocalyptic number.

1631201103 is a deficient number, since it is larger than the sum of its proper divisors (1062920145).

1631201103 is a wasteful number, since it uses less digits than its factorization.

1631201103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12943 (or 12940 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1631201103 is about 40388.1307193091. The cubic root of 1631201103 is about 1177.1609193100.

Adding to 1631201103 its reverse (3011021361), we get a palindrome (4642222464).

The spelling of 1631201103 in words is "one billion, six hundred thirty-one million, two hundred one thousand, one hundred three".