31054431 has 8 divisors (see below), whose sum is σ = 41684400. Its totient is φ = 20563712.

The previous prime is 31054423. The next prime is 31054459. The reversal of 31054431 is 13445013.

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

It is a cyclic number.

It is not a de Polignac number, because 31054431 - 2³ = 31054423 is a prime.

It is a super-2 number, since 2×31054431² = 1928755369467522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31054398 and 31054407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31054481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34290 + ... + 35183.

It is an arithmetic number, because the mean of its divisors is an integer number (5210550).

Almost surely, 2^31054431 is an apocalyptic number.

31054431 is a deficient number, since it is larger than the sum of its proper divisors (10629969).

31054431 is a wasteful number, since it uses less digits than its factorization.

31054431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69625.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 31054431 is about 5572.6502671530. The cubic root of 31054431 is about 314.3218163270.

Adding to 31054431 its reverse (13445013), we get a palindrome (44499444).

The spelling of 31054431 in words is "thirty-one million, fifty-four thousand, four hundred thirty-one".