31211243434 has 16 divisors (see below), whose sum is σ = 54411854400. Its totient is φ = 13149530784.

The previous prime is 31211243411. The next prime is 31211243467. The reversal of 31211243434 is 43434211213.

It is a happy number.

It is a super-2 number, since 2×31211243434² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18892179 + ... + 18893830.

It is an arithmetic number, because the mean of its divisors is an integer number (3400740900).

Almost surely, 2^31211243434 is an apocalyptic number.

31211243434 is a deficient number, since it is larger than the sum of its proper divisors (23200610966).

31211243434 is a wasteful number, since it uses less digits than its factorization.

31211243434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37786077.

The product of its digits is 6912, while the sum is 28.

Adding to 31211243434 its reverse (43434211213), we get a palindrome (74645454647).

The spelling of 31211243434 in words is "thirty-one billion, two hundred eleven million, two hundred forty-three thousand, four hundred thirty-four".