31154313144 has 16 divisors (see below), whose sum is σ = 77885782920. Its totient is φ = 10384771040.

The previous prime is 31154313143. The next prime is 31154313199. The reversal of 31154313144 is 44131345113.

It is a super-2 number, since 2×31154313144² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31154313143) 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 3 ways as a sum of consecutive naturals, for example, 649048167 + ... + 649048214.

Almost surely, 2^31154313144 is an apocalyptic number.

It is an amenable number.

31154313144 is an abundant number, since it is smaller than the sum of its proper divisors (46731469776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31154313144 is a wasteful number, since it uses less digits than its factorization.

31154313144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298096390 (or 1298096386 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

Adding to 31154313144 its reverse (44131345113), we get a palindrome (75285658257).

The spelling of 31154313144 in words is "thirty-one billion, one hundred fifty-four million, three hundred thirteen thousand, one hundred forty-four".