31401103 has 4 divisors (see below), whose sum is σ = 31508568. Its totient is φ = 31293640.

The previous prime is 31401101. The next prime is 31401119. The reversal of 31401103 is 30110413.

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 31401103 - 2¹ = 31401101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401101) 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, 53293 + ... + 53878.

It is an arithmetic number, because the mean of its divisors is an integer number (7877142).

Almost surely, 2^31401103 is an apocalyptic number.

31401103 is a deficient number, since it is larger than the sum of its proper divisors (107465).

31401103 is a wasteful number, since it uses less digits than its factorization.

31401103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107464.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 31401103 is about 5603.6687089799. The cubic root of 31401103 is about 315.4871206807.

Adding to 31401103 its reverse (30110413), we get a palindrome (61511516).

The spelling of 31401103 in words is "thirty-one million, four hundred one thousand, one hundred three".