31225121326 has 48 divisors (see below), whose sum is σ = 56109658176. Its totient is φ = 12985043904.

The previous prime is 31225121293. The next prime is 31225121371. The reversal of 31225121326 is 62312152213.

It is a junction number, because it is equal to n+sod(n) for n = 31225121294 and 31225121303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1340955 + ... + 1364041.

It is an arithmetic number, because the mean of its divisors is an integer number (1168951212).

Almost surely, 2^31225121326 is an apocalyptic number.

31225121326 is a deficient number, since it is larger than the sum of its proper divisors (24884536850).

31225121326 is a wasteful number, since it uses less digits than its factorization.

31225121326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23513 (or 23506 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

Adding to 31225121326 its reverse (62312152213), we get a palindrome (93537273539).

The spelling of 31225121326 in words is "thirty-one billion, two hundred twenty-five million, one hundred twenty-one thousand, three hundred twenty-six".