31480551 has 12 divisors (see below), whose sum is σ = 45728280. Its totient is φ = 20868720.

The previous prime is 31480529. The next prime is 31480621. The reversal of 31480551 is 15508413.

31480551 is a `hidden beast` number, since 31 + 4 + 80 + 551 = 666.

It is not a de Polignac number, because 31480551 - 2¹³ = 31472359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31482551) 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, 8160 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (3810690).

Almost surely, 2^31480551 is an apocalyptic number.

31480551 is a deficient number, since it is larger than the sum of its proper divisors (14247729).

31480551 is a wasteful number, since it uses less digits than its factorization.

31480551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19726 (or 19723 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 31480551 is about 5610.7531579994. The cubic root of 31480551 is about 315.7529681529.

Adding to 31480551 its reverse (15508413), we get a palindrome (46988964).

The spelling of 31480551 in words is "thirty-one million, four hundred eighty thousand, five hundred fifty-one".