31403061 has 12 divisors (see below), whose sum is σ = 45421792. Its totient is φ = 20906856.

The previous prime is 31403059. The next prime is 31403069. The reversal of 31403061 is 16030413.

It is not a de Polignac number, because 31403061 - 2¹ = 31403059 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 (31403069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6240 + ... + 10086.

Almost surely, 2^31403061 is an apocalyptic number.

It is an amenable number.

31403061 is a deficient number, since it is larger than the sum of its proper divisors (14018731).

31403061 is a wasteful number, since it uses less digits than its factorization.

31403061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760 (or 4757 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 31403061 is about 5603.8434132299. The cubic root of 31403061 is about 315.4936778913.

Adding to 31403061 its reverse (16030413), we get a palindrome (47433474).

The spelling of 31403061 in words is "thirty-one million, four hundred three thousand, sixty-one".