11631047 has 4 divisors (see below), whose sum is σ = 11668056. Its totient is φ = 11594040.

The previous prime is 11631029. The next prime is 11631071. The reversal of 11631047 is 74013611.

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 11631047 - 2¹⁴ = 11614663 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 (11631547) 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, 18029 + ... + 18662.

It is an arithmetic number, because the mean of its divisors is an integer number (2917014).

Almost surely, 2^11631047 is an apocalyptic number.

11631047 is a deficient number, since it is larger than the sum of its proper divisors (37009).

11631047 is an equidigital number, since it uses as much as digits as its factorization.

11631047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37008.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 11631047 is about 3410.4320840621. The cubic root of 11631047 is about 226.5720166625.

Adding to 11631047 its reverse (74013611), we get a palindrome (85644658).

The spelling of 11631047 in words is "eleven million, six hundred thirty-one thousand, forty-seven".