31020120123132 has 24 divisors (see below), whose sum is σ = 82720320328576. Its totient is φ = 8862891463728.

The previous prime is 31020120123121. The next prime is 31020120123133. The reversal of 31020120123132 is 23132102102013.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 31020120123099 and 31020120123108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020120123133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184643572078 + ... + 184643572245.

Almost surely, 2^{31020120123132} is an apocalyptic number.

It is an amenable number.

31020120123132 is an abundant number, since it is smaller than the sum of its proper divisors (51700200205444).

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

31020120123132 is a wasteful number, since it uses less digits than its factorization.

31020120123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369287144337 (or 369287144335 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31020120123132 its reverse (23132102102013), we get a palindrome (54152222225145).

The spelling of 31020120123132 in words is "thirty-one trillion, twenty billion, one hundred twenty million, one hundred twenty-three thousand, one hundred thirty-two".