31454224231 has 4 divisors (see below), whose sum is σ = 31833190872. Its totient is φ = 31075257592.

The previous prime is 31454224229. The next prime is 31454224289. The reversal of 31454224231 is 13242245413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13242245413 = 1301 ⋅10178513.

It is a cyclic number.

It is not a de Polignac number, because 31454224231 - 2¹ = 31454224229 is a prime.

It is a super-2 number, since 2×31454224231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31454224193 and 31454224202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31454224631) 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, 189483196 + ... + 189483361.

It is an arithmetic number, because the mean of its divisors is an integer number (7958297718).

Almost surely, 2^31454224231 is an apocalyptic number.

31454224231 is a deficient number, since it is larger than the sum of its proper divisors (378966641).

31454224231 is an equidigital number, since it uses as much as digits as its factorization.

31454224231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378966640.

The product of its digits is 23040, while the sum is 31.

Adding to 31454224231 its reverse (13242245413), we get a palindrome (44696469644).

The spelling of 31454224231 in words is "thirty-one billion, four hundred fifty-four million, two hundred twenty-four thousand, two hundred thirty-one".