31001120020230 has 16 divisors (see below), whose sum is σ = 74402688048624. Its totient is φ = 8266965338720.

The previous prime is 31001120020223. The next prime is 31001120020231. The reversal of 31001120020230 is 3202002110013.

It is a super-2 number, since 2×31001120020230² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31001120020231) 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, 516685333641 + ... + 516685333700.

It is an arithmetic number, because the mean of its divisors is an integer number (4650168003039).

Almost surely, 2^{31001120020230} is an apocalyptic number.

31001120020230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31001120020230 is an abundant number, since it is smaller than the sum of its proper divisors (43401568028394).

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

31001120020230 is a wasteful number, since it uses less digits than its factorization.

31001120020230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033370667351.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31001120020230 its reverse (3202002110013), we get a palindrome (34203122130243).

The spelling of 31001120020230 in words is "thirty-one trillion, one billion, one hundred twenty million, twenty thousand, two hundred thirty".