102620631 has 8 divisors (see below), whose sum is σ = 138754944. Its totient is φ = 67450040.

The previous prime is 102620629. The next prime is 102620711. The reversal of 102620631 is 136026201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102620631 - 2¹ = 102620629 is a prime.

It is a super-2 number, since 2×102620631² = 21061987813676322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102620598 and 102620607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102640631) 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, 240681 + ... + 241106.

It is an arithmetic number, because the mean of its divisors is an integer number (17344368).

Almost surely, 2^102620631 is an apocalyptic number.

102620631 is a deficient number, since it is larger than the sum of its proper divisors (36134313).

102620631 is an equidigital number, since it uses as much as digits as its factorization.

102620631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481861.

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

The square root of 102620631 is about 10130.1841542985. The cubic root of 102620631 is about 468.1786017494.

Adding to 102620631 its reverse (136026201), we get a palindrome (238646832).

The spelling of 102620631 in words is "one hundred two million, six hundred twenty thousand, six hundred thirty-one".