31101421436 has 6 divisors (see below), whose sum is σ = 54427487520. Its totient is φ = 15550710716.

The previous prime is 31101421427. The next prime is 31101421451. The reversal of 31101421436 is 63412410113.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3887677676 + ... + 3887677683.

It is an arithmetic number, because the mean of its divisors is an integer number (9071247920).

Almost surely, 2^31101421436 is an apocalyptic number.

It is an amenable number.

31101421436 is a deficient number, since it is larger than the sum of its proper divisors (23326066084).

31101421436 is a wasteful number, since it uses less digits than its factorization.

31101421436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775355363 (or 7775355361 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 31101421436 its reverse (63412410113), we get a palindrome (94513831549).

The spelling of 31101421436 in words is "thirty-one billion, one hundred one million, four hundred twenty-one thousand, four hundred thirty-six".