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31040401 = 74434343
BaseRepresentation
bin111011001101…
…0001110010001
32011102000102111
41312122032101
530421243101
63025145321
7524560540
oct166321621
964360374
1031040401
1116581127
12a48b241
13657a702
1441a0157
152ad2251
hex1d9a391

31040401 has 4 divisors (see below), whose sum is σ = 35474752. Its totient is φ = 26606052.

The previous prime is 31040381. The next prime is 31040407. The reversal of 31040401 is 10404013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31040401 - 25 = 31040369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31040407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217165 + ... + 2217178.

It is an arithmetic number, because the mean of its divisors is an integer number (8868688).

Almost surely, 231040401 is an apocalyptic number.

It is an amenable number.

31040401 is a deficient number, since it is larger than the sum of its proper divisors (4434351).

31040401 is an equidigital number, since it uses as much as digits as its factorization.

31040401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434350.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 31040401 is about 5571.3912984101. The cubic root of 31040401 is about 314.2744736535.

Adding to 31040401 its reverse (10404013), we get a palindrome (41444414).

The spelling of 31040401 in words is "thirty-one million, forty thousand, four hundred one".

Divisors: 1 7 4434343 31040401