31000211010 has 24 divisors (see below), whose sum is σ = 80600548860. Its totient is φ = 8266722912.

The previous prime is 31000210999. The next prime is 31000211023. The reversal of 31000211010 is 1011200013.

It can be written as a sum of positive squares in 2 ways, for example, as 30999588489 + 622521 = 176067^2 + 789^2 .

It is a super-2 number, since 2×31000211010² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 31000210983 and 31000211001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172223305 + ... + 172223484.

Almost surely, 2^31000211010 is an apocalyptic number.

31000211010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31000211010 is an abundant number, since it is smaller than the sum of its proper divisors (49600337850).

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

31000211010 is a wasteful number, since it uses less digits than its factorization.

31000211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344446802 (or 344446799 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 31000211010 its reverse (1011200013), we get a palindrome (32011411023).

The spelling of 31000211010 in words is "thirty-one billion, two hundred eleven thousand, ten".