31480131 has 8 divisors (see below), whose sum is σ = 44182720. Its totient is φ = 19882152.

The previous prime is 31480129. The next prime is 31480201. The reversal of 31480131 is 13108413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31480131 - 2¹ = 31480129 is a prime.

It is a super-2 number, since 2×31480131² = 1981997295554322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31480098 and 31480107.

It is not an unprimeable number, because it can be changed into a prime (31490131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276085 + ... + 276198.

It is an arithmetic number, because the mean of its divisors is an integer number (5522840).

Almost surely, 2^31480131 is an apocalyptic number.

31480131 is a deficient number, since it is larger than the sum of its proper divisors (12702589).

31480131 is a wasteful number, since it uses less digits than its factorization.

31480131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552305.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 31480131 is about 5610.7157297443. The cubic root of 31480131 is about 315.7515639331.

Adding to 31480131 its reverse (13108413), we get a palindrome (44588544).

The spelling of 31480131 in words is "thirty-one million, four hundred eighty thousand, one hundred thirty-one".