31404141 has 6 divisors (see below), whose sum is σ = 45361550. Its totient is φ = 20936088.

The previous prime is 31404137. The next prime is 31404161. The reversal of 31404141 is 14140413.

It can be written as a sum of positive squares in only one way, i.e., 28355625 + 3048516 = 5325^2 + 1746^2 .

It is not a de Polignac number, because 31404141 - 2² = 31404137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31404101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1744666 + ... + 1744683.

Almost surely, 2^31404141 is an apocalyptic number.

It is an amenable number.

31404141 is a deficient number, since it is larger than the sum of its proper divisors (13957409).

31404141 is a wasteful number, since it uses less digits than its factorization.

31404141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489355 (or 3489352 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 31404141 is about 5603.9397748370. The cubic root of 31404141 is about 315.4972946223.

Adding to 31404141 its reverse (14140413), we get a palindrome (45544554).

The spelling of 31404141 in words is "thirty-one million, four hundred four thousand, one hundred forty-one".