31223141542 has 8 divisors (see below), whose sum is σ = 46848254832. Its totient is φ = 15607056600.

The previous prime is 31223141513. The next prime is 31223141557. The reversal of 31223141542 is 24514132213.

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

It is a super-2 number, since 2×31223141542² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31223141542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2248434 + ... + 2262277.

It is an arithmetic number, because the mean of its divisors is an integer number (5856031854).

Almost surely, 2^31223141542 is an apocalyptic number.

31223141542 is a deficient number, since it is larger than the sum of its proper divisors (15625113290).

31223141542 is a wasteful number, since it uses less digits than its factorization.

31223141542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514174.

The product of its digits is 5760, while the sum is 28.

Adding to 31223141542 its reverse (24514132213), we get a palindrome (55737273755).

The spelling of 31223141542 in words is "thirty-one billion, two hundred twenty-three million, one hundred forty-one thousand, five hundred forty-two".